ECU Re-Mapping DIY

Performance Upgrade Chip – Varioram Euro with Lightweight Flywheel & Clutch for Euro Version (55-Pin DME)

Unleash the full performance potential of your 1995-1998 Porsche 993 Varioram (European specification) with the OE Match Performance Upgrade Chip, developed specifically for Driveblock-equipped vehicles fitted with an RS lightweight flywheel and clutch assembly. Designed exclusively for Euro-specification Varioram models (excluding US vehicles) using the 55-pin Bosch Motronic DME 0.261.203.679, this advanced calibration transforms the performance, drivability and responsiveness of Porsche's legendary air-cooled 3.6-litre flat-six.

Fits:

• Porsche 993 (911) C2 1995-97
• Porsche 993 (911) C4 1995-97
• Porsche 993 (911) C2S 1995-97
• Porsche 993 (911) C4S 1995-97

Suitable for both manual and Tiptronic transmissions, the OE Match Performance Chip delivers stronger low and mid-range torque, sharper throttle response and significantly improved acceleration while incorporating the latest Lightweight Flywheel (LWF) software.

Specifically Engineered for Lightweight Flywheel Conversions

A lightweight flywheel allows the engine to rev faster and respond more eagerly, but many conversions suffer from unstable idle, RPM dip and stalling during deceleration or when pulling away.

OE Match has developed one of the most advanced Lightweight Flywheel software solutions available to eliminate these common drivability issues while enhancing the benefits of the lighter rotating assembly.

The latest LWF calibration:

• Eliminates lightweight flywheel stalling
• Prevents RPM dropping below idle during deceleration and gear changes
• Improves clutch engagement from standstill
• Reduces unnecessary clutch slip, helping minimise clutch wear
• Maximises the sharper throttle response and faster engine acceleration provided by the lightweight flywheel

Former OE Match customers are welcome to have their chips updated free of charge to the latest Lightweight Flywheel coding.

Unlock the Hidden Performance of the Varioram Engine

The Porsche Varioram induction system already provides exceptional flexibility, but the factory Bosch Motronic calibration leaves noticeable performance untapped.

OE Match software removes the familiar hesitation below 4,000 rpm, allowing the engine to produce substantially stronger low and mid-range torque while delivering immediate throttle response throughout the rev range.

Performance benefits include:

• Increased horsepower and torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm flat spot
• Improved acceleration throughout the rev range
• Faster engine response
• Smoother and more progressive power delivery

The result is a 993 that feels significantly more responsive and rewarding to drive in every situation.

Optional Immobiliser / Driveblock Delete

This chip can also be supplied with the Immobiliser / Driveblock function disabled for vehicles originally equipped with Porsche's factory Driveblock system.

Removing the Driveblock function eliminates the need to deactivate the immobiliser using the key fob before every journey, returning the vehicle to the operation of a factory non-Driveblock model.

To complete the conversion, install jumper relay 964.610.184.00 into relay position R61, exactly as Porsche specified.

Premium Fuel Calibration

Every OE Match Performance Chip is calibrated for 91 AKI (95 RON) premium unleaded fuel as standard.

For owners regularly using 93 AKI (98 RON) premium fuel, an alternative 98 RON calibration can be supplied. Simply select your preferred fuel grade when placing your order.

Unlike many generic performance chips, OE Match software is carefully developed to deliver enhanced performance without triggering the Check Engine Light.

Ordering Information

This calibration is compatible with:

• Porsche 993 Varioram (1995-1998 European specification)
• Bosch Motronic DME 0.261.203.679
• 55-pin DME connector Manual transmission
  
• Tiptronic transmission RS lightweight flywheel and clutch conversions

Before ordering, verify the Bosch DME number printed on the Motronic label located on the DME beneath the left-hand front seat.

Why Choose OE Match?

Every OE Match Performance Chip is developed through extensive dyno testing and real-world road evaluation to deliver maximum performance while maintaining factory reliability.

Each calibration is tailored to the exact vehicle specification, optimised for lightweight flywheel conversions and engineered for premium fuel

Benefits

• Increased horsepower and torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm lag
• Eliminates lightweight flywheel stalling
• Improved clutch engagement and drivability
• Faster engine response
• Reduced clutch wear
• Optional Driveblock removal
• Factory-quality reliability

Porsche 993 Varioram Performance Chips for Lightweight Flywheel Conversions

OE Match Performance Chips are engineered specifically for 1995-1998 Porsche 993 Varioram Euro models fitted with an RS lightweight flywheel and clutch assembly. By recalibrating the Bosch Motronic ECU and incorporating the latest Lightweight Flywheel software, these calibrations eliminate the common drivability issues associated with lightweight flywheel conversions while delivering stronger torque, faster throttle response and increased horsepower.

Design911 supplies vehicle-specific OE Match Performance Chips for manual and Tiptronic transmissions, with support for optional Driveblock removal, premium fuel calibrations and Bosch DME-specific programming. Every chip is carefully matched to the correct ECU to ensure maximum compatibility, reliability and performance

Performance Upgrade Chip – Varioram Euro with Lightweight Flywheel & Clutch for Euro Version (55-Pin DME)

Unleash the full performance potential of your 1995-1998 Porsche 993 Varioram (European specification) with the OE Match Performance Upgrade Chip, engineered specifically for cars fitted with an RS lightweight flywheel and clutch assembly. Designed exclusively for Euro-specification Varioram models (excluding US vehicles) using the 55-pin Bosch Motronic DME 0.261.203.678, this advanced calibration transforms the performance, drivability and responsiveness of Porsche's legendary 3.6-litre air-cooled flat-six.

Fits:

• Porsche 993 (911) C2 1995-97
• Porsche 993 (911) C4 1995-97
• Porsche 993 (911) C2S 1995-97
• Porsche 993 (911) C4S 1995-97

Suitable for both manual and Tiptronic transmissions, the OE Match Performance Chip delivers stronger low and mid-range torque, sharper throttle response and significantly improved acceleration while incorporating the latest Lightweight Flywheel (LWF) software.

Specifically Engineered for Lightweight Flywheel Conversions

An RS lightweight flywheel allows the engine to rev faster and respond more eagerly, but many conversions suffer from unstable idle, RPM dip and stalling during deceleration or when pulling away.

OE Match has developed one of the most advanced Lightweight Flywheel software solutions available to eliminate these common drivability issues while enhancing the benefits of the lighter rotating assembly.

The latest LWF calibration:

• Eliminates lightweight flywheel stalling
• Prevents RPM dropping below idle during deceleration and gear changes
• Improves clutch engagement from standstill
• Reduces unnecessary clutch slip, helping minimise clutch wear
• Maximises the sharper throttle response and faster engine acceleration provided by the lightweight flywheel

Former OE Match customers are welcome to have their chips updated free of charge to the latest Lightweight Flywheel coding.

Unlock the Hidden Performance of the Varioram Engine

The Porsche Varioram induction system already provides exceptional flexibility, but the factory Bosch Motronic calibration leaves noticeable performance untapped.

OE Match software removes the familiar hesitation below 4,000 rpm, allowing the engine to produce substantially stronger low and mid-range torque while delivering immediate throttle response throughout the rev range.

Performance benefits include:

• Increased horsepower and torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm flat spot
• Improved acceleration throughout the rev range
• Faster engine response
• Smoother and more progressive power delivery

The result is a 993 that feels significantly more responsive and rewarding to drive in every situation.

Optional Immobiliser / Driveblock Delete

This chip can also be supplied with the Immobiliser / Driveblock function disabled for vehicles originally equipped with Porsche's factory Driveblock system.

Removing the Driveblock function eliminates the need to deactivate the immobiliser using the key fob before every journey, returning the vehicle to the operation of a factory non-Driveblock model.

To complete the conversion, install jumper relay 964.610.184.00 into relay position R61, exactly as Porsche specified.

Premium Fuel Calibration

Every OE Match Performance Chip is calibrated for 91 AKI (95 RON) premium unleaded fuel as standard.

For owners regularly using 93 AKI (98 RON) premium fuel, an alternative 98 RON calibration can be supplied. Simply select your preferred fuel grade when placing your order.

Unlike many generic performance chips, OE Match software is carefully developed to deliver enhanced performance without triggering the Check Engine Light.

Ordering Information

This calibration is compatible with:

• Porsche 993 Varioram (1995-1998 European specification)
• Bosch Motronic DME 0.261.203.678
• 55-pin DME connector Manual transmission
  
• Tiptronic transmission RS lightweight flywheel and clutch conversions

Before ordering, verify the Bosch DME number printed on the Motronic label located on the DME beneath the left-hand front seat.

Why Choose OE Match?

Every OE Match Performance Chip is developed through extensive dyno testing and real-world road evaluation to deliver maximum performance while maintaining factory reliability.

Each calibration is tailored to the exact vehicle specification, optimised for lightweight flywheel conversions and engineered for premium fuel

Benefits

• Increased horsepower and torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm lag
• Eliminates lightweight flywheel stalling
• Improved clutch engagement and drivability
• Faster engine response
• Reduced clutch wear
• Optional Driveblock removal
• Factory-quality reliability

Porsche 993 Varioram Performance Chips for Lightweight Flywheel Conversions

OE Match Performance Chips are engineered specifically for 1995-1998 Porsche 993 Varioram Euro models fitted with an RS lightweight flywheel and clutch assembly. By recalibrating the Bosch Motronic ECU and incorporating the latest Lightweight Flywheel software, these calibrations eliminate the common drivability issues associated with lightweight flywheel conversions while delivering stronger torque, faster throttle response and increased horsepower.

Design911 supplies vehicle-specific OE Match Performance Chips for manual and Tiptronic transmissions, with support for optional Driveblock removal, premium fuel calibrations and Bosch DME-specific programming. Every chip is carefully matched to the correct ECU to ensure maximum compatibility, reliability and performance

Performance Upgrade Chip – Varioram with Standard Flywheel and Clutch for Euro Version (55-Pin DME)

Unlock the full performance potential of your 1995-1998 Porsche 993 Varioram (European specification) with the OE Match Performance Upgrade Chip. Developed exclusively for Euro Varioram models (excluding US specification vehicles) fitted with the 55-pin Bosch Motronic DME 0.261.203.678, this advanced calibration transforms the performance and drivability of Porsche's final air-cooled flat-six.

Fits:

• Porsche 993 (911) C2 1995-97
• Porsche 993 (911) C4 1995-97
• Porsche 993 (911) C2S 1995-97
• Porsche 993 (911) C4S 1995-97

Suitable for manual and Tiptronic transmissions, the OE Match Performance Chip delivers stronger low and mid-range torque, sharper throttle response and smoother power delivery while maintaining factory reliability.

Unlock the Hidden Performance of the Varioram Engine

The Varioram induction system provides excellent flexibility, but the factory Bosch Motronic calibration leaves significant performance untapped. OE Match software has been extensively developed to remove the familiar hesitation below 4,000 rpm, allowing the 3.6-litre engine to produce stronger pulling power from low RPM while delivering noticeably improved throttle response.

Benefits include:

• Increased low and mid-range torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm flat spot
• Improved acceleration throughout the rev range
• Dyno-proven horsepower gains
• Smoother, more responsive power delivery

The result is a 993 that feels more eager, more flexible and considerably more enjoyable to drive on both road and track.

Includes the Latest Lightweight Flywheel (LWF) Software

If your vehicle has been fitted with an RS lightweight flywheel and clutch, the latest OE Match software incorporates the advanced Lightweight Flywheel Fix.

This programming:

• Eliminates lightweight flywheel stalling
• Prevents RPM dipping below idle during deceleration and gear changes
• Improves clutch engagement
• Reduces unnecessary clutch slip and wear
• Further enhances throttle response

The software is fully compatible with both standard and lightweight flywheel vehicles, and existing OE Match customers can update earlier chips to the latest LWF coding.

Optional Immobiliser / Driveblock Delete

This calibration can also be supplied with the Immobiliser / Driveblock function disabled for vehicles equipped with Porsche's factory Driveblock system.

Removing the Driveblock function eliminates the need to deactivate the immobiliser with the key fob before every journey, restoring the operation of the vehicle to that of a factory non-Driveblock model.

To complete the conversion, install jumper relay 96461018400 into relay position R61, exactly as Porsche specified for non-Driveblock vehicles.

Ordering Information

This calibration is suitable for:

• 1995-1998 Porsche 993 Varioram (European specification only)
• Bosch Motronic DME 0.261.203.678
• 55-pin DME connector
• Manual transmission or Tiptronic transmission

Before ordering, confirm the Bosch DME number printed on the Motronic label located on the DME beneath the left-hand front seat to ensure compatibility.

Why Choose OE Match?

Unlike generic replacement chips, every OE Match calibration has been extensively refined through dyno development and real-world road testing to deliver maximum performance while maintaining factory reliability.

The software is designed for 95 RON premium fuel as standard, with an optional 98 RON performance calibration available for owners regularly using higher-octane fuel. Every chip is engineered not to trigger the Check Engine Light and is backed by a 100% satisfaction guarantee.

Benefits

Increased horsepower and torque Sharper throttle response Eliminates the factory sub-4,000 rpm hesitation Improved low and mid-range acceleration Supports lightweight flywheel conversions Optional Driveblock removal Improved everyday drivability 100% satisfaction guarantee

Porsche 993 Varioram Performance Chips & Bosch Motronic ECU Upgrades

OE Match Performance Chips are specifically developed for 1995-1998 European Porsche 993 Varioram models equipped with the 55-pin Bosch Motronic DME 0.261.203.678. By optimising ignition timing, fuel delivery and throttle response, these calibrations unlock the full performance potential of the Varioram induction system while maintaining factory refinement and reliability.

Performance Upgrade Chip – Varioram with Standard Flywheel and Clutch for Euro Version (55-Pin DME)

Unlock the full performance potential of your 1995-1998 Porsche 993 Varioram (European specification) with the OE Match Performance Upgrade Chip. Developed exclusively for Euro Varioram models (excluding US specification vehicles) fitted with the 55-pin Bosch Motronic DME 0.261.203.679, this advanced calibration transforms the performance and drivability of Porsche's final air-cooled flat-six.

Fits:

• Porsche 993 (911) C2 1995-97
• Porsche 993 (911) C4 1995-97
• Porsche 993 (911) C2S 1995-97
• Porsche 993 (911) C4S 1995-97

Suitable for manual and Tiptronic transmissions, the OE Match Performance Chip delivers stronger low and mid-range torque, sharper throttle response and smoother power delivery while maintaining factory reliability.

Unlock the Hidden Performance of the Varioram Engine

The Varioram induction system provides excellent flexibility, but the factory Bosch Motronic calibration leaves significant performance untapped. OE Match software has been extensively developed to remove the familiar hesitation below 4,000 rpm, allowing the 3.6-litre engine to produce stronger pulling power from low RPM while delivering noticeably improved throttle response.

Benefits include:

• Increased low and mid-range torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm flat spot
• Improved acceleration throughout the rev range
• Dyno-proven horsepower gains
• Smoother, more responsive power delivery

The result is a 993 that feels more eager, more flexible and considerably more enjoyable to drive on both road and track.

Includes the Latest Lightweight Flywheel (LWF) Software

If your vehicle has been fitted with an RS lightweight flywheel and clutch, the latest OE Match software incorporates the advanced Lightweight Flywheel Fix.

This programming:

• Eliminates lightweight flywheel stalling
• Prevents RPM dipping below idle during deceleration and gear changes
• Improves clutch engagement
• Reduces unnecessary clutch slip and wear
• Further enhances throttle response

The software is fully compatible with both standard and lightweight flywheel vehicles, and existing OE Match customers can update earlier chips to the latest LWF coding.

Optional Immobiliser / Driveblock Delete

This calibration can also be supplied with the Immobiliser / Driveblock function disabled for vehicles equipped with Porsche's factory Driveblock system.

Removing the Driveblock function eliminates the need to deactivate the immobiliser with the key fob before every journey, restoring the operation of the vehicle to that of a factory non-Driveblock model.

To complete the conversion, install jumper relay 96461018400 into relay position R61, exactly as Porsche specified for non-Driveblock vehicles.

Ordering Information

This calibration is suitable for:

• 1995-1998 Porsche 993 Varioram (European specification only)
• Bosch Motronic DME 0.261.203.679
• 55-pin DME connector
• Manual transmission or Tiptronic transmission

Before ordering, confirm the Bosch DME number printed on the Motronic label located on the DME beneath the left-hand front seat to ensure compatibility.

Why Choose OE Match?

Unlike generic replacement chips, every OE Match calibration has been extensively refined through dyno development and real-world road testing to deliver maximum performance while maintaining factory reliability.

The software is designed for 95 RON premium fuel as standard, with an optional 98 RON performance calibration available for owners regularly using higher-octane fuel. Every chip is engineered not to trigger the Check Engine Light and is backed by a 100% satisfaction guarantee.

Benefits

Increased horsepower and torque Sharper throttle response Eliminates the factory sub-4,000 rpm hesitation Improved low and mid-range acceleration Supports lightweight flywheel conversions Optional Driveblock removal Improved everyday drivability 100% satisfaction guarantee

Porsche 993 Varioram Performance Chips & Bosch Motronic ECU Upgrades

OE Match Performance Chips are specifically developed for 1995-1998 European Porsche 993 Varioram models equipped with the 55-pin Bosch Motronic DME 0.261.203.678. By optimising ignition timing, fuel delivery and throttle response, these calibrations unlock the full performance potential of the Varioram induction system while maintaining factory refinement and reliability.

Performance Upgrade Chip – Non-Varioram with Lightweight Flywheel & Clutch

Unlock the full potential of your 1994-1995 Porsche 993 Non-Varioram with the OE Match Performance Upgrade Chip, developed specifically for cars fitted with an RS lightweight flywheel and clutch. Designed for manual and Tiptronic (non-Driveblock) models, this advanced Bosch Motronic calibration delivers stronger low and mid-range torque, sharper throttle response and improved drivability while incorporating the latest Lightweight Flywheel (LWF) software solution.

Fits:

• Porsche 993 (911) C2 1994-95
• Porsche 993 (911) C4 1994-95

Compatible with Bosch Motronic DME 0.261.203.674 and the following Porsche DME part numbers:

• 99361812301
• 99361812302
• 99361812303
• 99361812304
• 99361812305
• 99361812306

Designed for Lightweight Flywheel Conversions

Fitting an RS lightweight flywheel allows the engine to rev more freely and respond faster, but many conversions suffer from unstable idle, RPM dip and stalling during deceleration or when pulling away.

OE Match has developed one of the most advanced software solutions available to eliminate these issues while enhancing the performance benefits of the lightweight flywheel.

The latest calibration:

• Eliminates lightweight flywheel stalling
• Prevents RPM dropping below idle during deceleration and gear changes
• Improves clutch engagement from standstill
• Reduces unnecessary clutch slip and wear
• Maximises the faster throttle response of the lightweight flywheel

Former OE Match customers can also have earlier chips updated to the latest LWF coding.

Unlock the Hidden Performance of the 3.6-Litre Flat-Six

The factory Bosch Motronic calibration leaves considerable performance untapped. OE Match software has been extensively developed to remove the familiar flat spot below 4,000 rpm, giving the engine stronger pulling power from low RPM and significantly improving throttle response.

Benefits include:

• Increased low and mid-range torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm hesitation
• Improved acceleration throughout the rev range
• Dyno-proven horsepower gains
• Smoother, more responsive power delivery

The result is a 993 that feels noticeably more eager, making full use of the lightweight flywheel's quicker engine response.

Premium Fuel Calibration

Every OE Match chip is calibrated for 91 AKI (95 RON) premium unleaded fuel as standard. If you regularly use 93 AKI (98 RON) fuel, a dedicated 98 RON calibration can be supplied. Simply select your preferred fuel grade when ordering.

Optional Immobiliser / Driveblock Delete

For vehicles originally equipped with Porsche's Driveblock immobiliser, this chip can also be supplied with the immobiliser function disabled.

This removes the need to deactivate the immobiliser with the key fob before every journey, returning the vehicle to the operation of a factory non-Driveblock model.

To complete the conversion, install jumper relay 96461018400 into relay position R61, exactly as Porsche specified on non-Driveblock vehicles.

Ordering Information

Porsche fitted six different Bosch Motronic DMEs to 1994-1995 Non-Varioram models.

Before ordering, remove the DME unit from beneath the left-hand front seat and verify the Bosch or Porsche part number shown on the Motronic label to ensure the correct chip is supplied.

Why Choose OE Match?

Unlike generic replacement chips, every OE Match calibration is developed through extensive dyno testing and real-world road evaluation to suit the exact vehicle specification.

The software is engineered specifically for lightweight flywheel conversions, will not trigger the Check Engine Light

Benefits

• Increased horsepower and torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm lag
• Eliminates lightweight flywheel stalling
• Improved clutch engagement
• Faster engine response Optional
• Driveblock removal
• Improved everyday drivability
• Premium fuel calibration (95 RON standard / 98 RON optional)
• Will not trigger the Check Engine Light       

Performance Upgrade Chip – Non-Varioram with Lightweight Flywheel & Clutch

Unlock the full potential of your 1994-1995 Porsche 993 Non-Varioram with the OE Match Performance Upgrade Chip, developed specifically for cars fitted with an RS lightweight flywheel and clutch. Designed for manual and Tiptronic (non-Driveblock) models, this advanced Bosch Motronic calibration delivers stronger low and mid-range torque, sharper throttle response and improved drivability while incorporating the latest Lightweight Flywheel (LWF) software solution.

Fits:

• Porsche 993 (911) C2 1994-95
• Porsche 993 (911) C4 1994-95

Compatible with Bosch Motronic DME 0.261.203.675 and the following Porsche DME part numbers:

• 99361812403
• 99361812404
• 99361812405
• 99361812406

Designed for Lightweight Flywheel Conversions

Fitting an RS lightweight flywheel allows the engine to rev more freely and respond faster, but many conversions suffer from unstable idle, RPM dip and stalling during deceleration or when pulling away.

OE Match has developed one of the most advanced software solutions available to eliminate these issues while enhancing the performance benefits of the lightweight flywheel.

The latest calibration:

• Eliminates lightweight flywheel stalling
• Prevents RPM dropping below idle during deceleration and gear changes
• Improves clutch engagement from standstill
• Reduces unnecessary clutch slip and wear
• Maximises the faster throttle response of the lightweight flywheel

Former OE Match customers can also have earlier chips updated to the latest LWF coding.

Unlock the Hidden Performance of the 3.6-Litre Flat-Six

The factory Bosch Motronic calibration leaves considerable performance untapped. OE Match software has been extensively developed to remove the familiar flat spot below 4,000 rpm, giving the engine stronger pulling power from low RPM and significantly improving throttle response.

Benefits include:

• Increased low and mid-range torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm hesitation
• Improved acceleration throughout the rev range
• Dyno-proven horsepower gains
• Smoother, more responsive power delivery

The result is a 993 that feels noticeably more eager, making full use of the lightweight flywheel's quicker engine response.

Premium Fuel Calibration

Every OE Match chip is calibrated for 91 AKI (95 RON) premium unleaded fuel as standard. If you regularly use 93 AKI (98 RON) fuel, a dedicated 98 RON calibration can be supplied. Simply select your preferred fuel grade when ordering.

Optional Immobiliser / Driveblock Delete

For vehicles originally equipped with Porsche's Driveblock immobiliser, this chip can also be supplied with the immobiliser function disabled.

This removes the need to deactivate the immobiliser with the key fob before every journey, returning the vehicle to the operation of a factory non-Driveblock model.

To complete the conversion, install jumper relay 96461018400 into relay position R61, exactly as Porsche specified on non-Driveblock vehicles.

Ordering Information

Porsche fitted six different Bosch Motronic DMEs to 1994-1995 Non-Varioram models.

Before ordering, remove the DME unit from beneath the left-hand front seat and verify the Bosch or Porsche part number shown on the Motronic label to ensure the correct chip is supplied.

Why Choose OE Match?

Unlike generic replacement chips, every OE Match calibration is developed through extensive dyno testing and real-world road evaluation to suit the exact vehicle specification.

The software is engineered specifically for lightweight flywheel conversions, will not trigger the Check Engine Light

Benefits

• Increased horsepower and torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm lag
• Eliminates lightweight flywheel stalling
• Improved clutch engagement
• Faster engine response Optional
• Driveblock removal
• Improved everyday drivability
• Premium fuel calibration (95 RON standard / 98 RON optional)
• Will not trigger the Check Engine Light       

Performance Upgrade Chip – Non-Varioram Cars

Unlock the true performance of your 1994-1995 Porsche 993 Non-Varioram with the OE Match Performance Upgrade Chip. Developed specifically for manual and Tiptronic (non-Driveblock) models, this precision calibration transforms the drivability of the legendary 3.6-litre flat-six, delivering stronger low and mid-range torque, sharper throttle response and improved acceleration throughout the rev range.

Fits:

• Porsche 993 (911) C2 1994-95
• Porsche 993 (911) C4 1994-95

Compatible with Bosch Motronic DME 0.261.203.674 and the following Porsche DME part numbers:

• 99361812301
• 99361812302
• 99361812303
• 99361812304
• 99361812305
• 99361812306

Transform the Way Your 993 Drives

The factory Bosch Motronic calibration leaves noticeable performance untapped. OE Match software has been extensively developed to eliminate the familiar flat spot below 4,000 rpm, allowing the engine to pull harder from low RPM while significantly improving throttle response and everyday drivability.

Benefits include:

• Stronger low and mid-range torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm hesitation
• Improved acceleration throughout the rev range
• Dyno-proven horsepower gains
• Smoother, more responsive driving experience

Every calibration is designed for 91 AKI (95 RON) premium fuel as standard. If you regularly use 93 AKI (98 RON) fuel, an optimised 98 RON calibration can be supplied—simply select your preferred fuel grade when ordering.

Includes the Latest Lightweight Flywheel (LWF) Fix

If your 993 has been fitted with an RS lightweight flywheel, this software includes the latest LWF Fix to eliminate the stalling and RPM dip often associated with lightweight flywheel conversions.

The updated programming:

Eliminates stalling during deceleration and gear changes Prevents RPM dropping below idle Improves clutch engagement Reduces unnecessary clutch slip Enhances throttle response

The software is equally suitable for vehicles retaining the factory flywheel, and existing customers can update older OE Match chips to the latest LWF coding.

Optional Immobiliser / Driveblock Delete

This chip can also be supplied with the Immobiliser / Driveblock function disabled for vehicles originally equipped with the Porsche Driveblock system.

Disabling the Driveblock removes the need to deactivate the immobiliser with the key fob every time the vehicle is started, returning the car to the operating style of factory non-Driveblock models.

To complete the conversion, jumper relay 964.610.184.00 must be installed in relay position R61, exactly as fitted by Porsche on non-Driveblock vehicles.

Ordering Information

Porsche fitted six different Bosch Motronic DMEs to 1994-1995 Non-Varioram 993 models.

Before ordering, remove the DME unit from beneath the left-hand front seat and confirm the Bosch or Porsche part number printed on the Motronic label to ensure the correct chip is supplied.

Why Choose OE Match?

Unlike generic replacement chips, every OE Match calibration has been extensively refined through dyno development and real-world testing to provide maximum performance while maintaining factory reliability.

The software is engineered not to trigger the Check Engine Light

Benefits

• Increased horsepower and torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm lag
• Improved low and mid-range acceleration
• Eliminates lightweight flywheel stalling
• Optional Driveblock removal Improved everyday drivability 

Porsche 993 Non-Varioram Performance Chips & Bosch Motronic ECU Upgrades

OE Match Performance Chips are specifically developed for 1994-1995 Porsche 993 Non-Varioram models, optimising the Bosch Motronic ECU to deliver stronger torque, improved throttle response and increased horsepower while maintaining factory reliability.

Design911 supplies model-specific calibrations for manual and Tiptronic cars, with support for lightweight flywheel conversions, premium fuel calibrations and optional Driveblock removal. Every chip is matched to the correct Bosch DME to ensure perfect compatibility and maximum performance.

Performance Upgrade Chip – Non-Varioram Cars

Unlock the true performance of your 1994-1995 Porsche 993 Non-Varioram with the OE Match Performance Upgrade Chip. Developed specifically for manual and Tiptronic (non-Driveblock) models, this precision calibration transforms the drivability of the legendary 3.6-litre flat-six, delivering stronger low and mid-range torque, sharper throttle response and improved acceleration throughout the rev range.

Fits:

• Porsche 993 (911) C2 1994-95
• Porsche 993 (911) C4 1994-95

Compatible with Bosch Motronic DME 0.261.203.675 and the following Porsche DME part numbers:

• 99361812403
• 99361812404
• 99361812405
• 99361812406       

Transform the Way Your 993 Drives

The factory Bosch Motronic calibration leaves noticeable performance untapped. OE Match software has been extensively developed to eliminate the familiar flat spot below 4,000 rpm, allowing the engine to pull harder from low RPM while significantly improving throttle response and everyday drivability.

Benefits include:

• Stronger low and mid-range torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm hesitation
• Improved acceleration throughout the rev range
• Dyno-proven horsepower gains
• Smoother, more responsive driving experience

Every calibration is designed for 91 AKI (95 RON) premium fuel as standard. If you regularly use 93 AKI (98 RON) fuel, an optimised 98 RON calibration can be supplied—simply select your preferred fuel grade when ordering.

Includes the Latest Lightweight Flywheel (LWF) Fix

If your 993 has been fitted with an RS lightweight flywheel, this software includes the latest LWF Fix to eliminate the stalling and RPM dip often associated with lightweight flywheel conversions.

The updated programming:

Eliminates stalling during deceleration and gear changes Prevents RPM dropping below idle Improves clutch engagement Reduces unnecessary clutch slip Enhances throttle response

The software is equally suitable for vehicles retaining the factory flywheel, and existing customers can update older OE Match chips to the latest LWF coding.

Optional Immobiliser / Driveblock Delete

This chip can also be supplied with the Immobiliser / Driveblock function disabled for vehicles originally equipped with the Porsche Driveblock system.

Disabling the Driveblock removes the need to deactivate the immobiliser with the key fob every time the vehicle is started, returning the car to the operating style of factory non-Driveblock models.

To complete the conversion, jumper relay 964.610.184.00 must be installed in relay position R61, exactly as fitted by Porsche on non-Driveblock vehicles.

Ordering Information

Porsche fitted six different Bosch Motronic DMEs to 1994-1995 Non-Varioram 993 models.

Before ordering, remove the DME unit from beneath the left-hand front seat and confirm the Bosch or Porsche part number printed on the Motronic label to ensure the correct chip is supplied.

Why Choose OE Match?

Unlike generic replacement chips, every OE Match calibration has been extensively refined through dyno development and real-world testing to provide maximum performance while maintaining factory reliability.

The software is engineered not to trigger the Check Engine Light

Benefits

• Increased horsepower and torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm lag
• Improved low and mid-range acceleration
• Eliminates lightweight flywheel stalling
• Optional Driveblock removal Improved everyday drivability 

Porsche 993 Non-Varioram Performance Chips & Bosch Motronic ECU Upgrades

OE Match Performance Chips are specifically developed for 1994-1995 Porsche 993 Non-Varioram models, optimising the Bosch Motronic ECU to deliver stronger torque, improved throttle response and increased horsepower while maintaining factory reliability.

Design911 supplies model-specific calibrations for manual and Tiptronic cars, with support for lightweight flywheel conversions, premium fuel calibrations and optional Driveblock removal. Every chip is matched to the correct Bosch DME to ensure perfect compatibility and maximum performance.