ECU Re-Mapping DIY

Performance Upgrade Chip – with Stock Exhaust Configuration

Transform the way your Porsche 964 Carrera 2 or Carrera 4 drives with the OE Match Performance Upgrade Chip. Developed specifically for stock engine/exhaust configurations using the factory catalytic converter together with either the original rear silencers or a primary or secondary muffler bypass pipe, this calibration is suitable for manual and Tiptronic models, with or without a lightweight flywheel.

Fits:

• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93

Unleash the Hidden Performance

The factory Bosch Motronic calibration leaves considerable performance untapped. OE Match software unlocks stronger low and mid-range torque, sharper throttle response and improved drivability, eliminating the familiar flat spot below 4,000 rpm while delivering dyno-proven horsepower gains.

The result is a 964 that feels noticeably more responsive, pulls harder from low engine speeds and offers the kind of immediate throttle response that transforms both road and track driving.

Developed for Your Exact Configuration

Every OE Match chip has been extensively developed through dyno testing and real-world road evaluation using premium pump fuel. Unlike generic performance chips, each calibration is matched to your vehicle's specification, ensuring safe air-fuel ratios and optimum performance.

Suitable for:

• Porsche 964 Carrera 2 & Carrera 4 Manual and Tiptronic transmissions
  
• Factory catalytic converter
• Standard rear silencers
• Primary or secondary muffler bypass pipes
• Factory or RS lightweight flywheel

Dyno Developed for Real-World Driving

Unlike generic replacement chips, OE Match calibrations are written specifically for each engine and exhaust configuration.

Every program has been extensively developed through hundreds of hours of dyno tuning, road evaluation and real-world testing using everyday pump fuel. Ignition timing, fuel delivery and throttle mapping have all been optimised to deliver:

• Smoother idle
• Increased low and mid-range torque
• Sharper throttle response
• Elimination of the factory sub-4,000 rpm flat spot
• Stronger acceleration throughout the rev range
• Dyno-proven horsepower gains
• Improved everyday drivability

Unlike inferior calibrations, OE Match software maintains safe air-fuel ratios, ensuring the engine continues to run efficiently while avoiding the lean conditions that can reduce performance and increase knock sensor activity.

 Includes the Lightweight Flywheel (LWF) Fix

This software includes the latest LWF fix, eliminating the stalling and RPM dip commonly associated with lightweight flywheel conversions. It also improves clutch engagement and throttle response while remaining fully compatible with standard flywheel cars.

OE Match chips are developed from completely new software, not modified factory maps. Hundreds of hours of dyno development and road testing have produced a calibration that delivers smoother idle, stronger torque, improved throttle response and outstanding drivability without triggering the Check Engine Light.

Features

• Designed for Porsche 964 Carrera 2 & Carrera 4 Manual and Tiptronic compatible
• Supports stock catalytic converter
• Compatible with factory silencers or muffler bypass pipes
• Works with or without an RS lightweight flywheel
• Includes the latest Lightweight Flywheel Fix
• Dyno-developed Bosch Motronic calibration
• Will not trigger the Check Engine Light

Benefits

• Increased horsepower and torque
• Eliminates the factory sub-4,000 rpm hesitation
• Sharper throttle response
• Improved low and mid-range acceleration
• Smoother idle
• Eliminates lightweight flywheel stalling
• Better everyday drivability

Porsche 964 Performance Chips & Bosch Motronic ECU Upgrades

OE Match Performance Chips are designed specifically for the Porsche 964, optimising the Bosch Motronic engine management to improve throttle response, torque and overall drivability. Whether your car is fitted with a factory flywheel, an RS lightweight flywheel, standard silencers or muffler bypass pipes, Design911 offers model-specific calibrations developed to maximise performance while maintaining factory reliability.

Performance Upgrade Chip with Premuffler / Cat Bypass

Unlock the full performance of your 1989-1994 Porsche 964 Carrera 2 or Carrera 4 with the OE Match Performance Upgrade Chip. Designed specifically for cars fitted with a premuffler, catalytic converter bypass or sports catalytic converter, together with either the factory rear silencers, a muffler bypass or a sports muffler.

Fits:

• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93

Suitable for manual and Tiptronic models, this calibration also supports vehicles fitted with an RS lightweight flywheel, with the latest LWF software fix included as standard.

Optimised for Modified Exhaust Systems
Removing the restrictive factory catalytic converter improves exhaust flow, but the Bosch Motronic ECU requires recalibration to fully exploit the increased airflow. OE Match software provides the additional fuel and optimised ignition timing needed to maximise performance while maintaining safe air-fuel ratios and preventing excessive knock sensor intervention.

The result is:

• Stronger low and mid-range torque
• Sharper throttle response
• Elimination of the factory flat spot below 4,000 rpm
• Smoother idle
• Dyno-proven horsepower gains
• Improved everyday drivability

Your 964 feels lighter, more responsive and pulls hard from low engine speeds, making both road driving and track use considerably more rewarding.

Dyno Developed for Real-World Driving
Unlike generic replacement chips, OE Match calibrations are written specifically for each engine and exhaust configuration.

Every program has been extensively developed through hundreds of hours of dyno tuning, road evaluation and real-world testing using everyday pump fuel. Ignition timing, fuel delivery and throttle mapping have all been optimised to deliver:

• Smoother idle
• Increased low and mid-range torque
• Sharper throttle response
• Elimination of the factory sub-4,000 rpm flat spot
• Stronger acceleration throughout the rev range
• Dyno-proven horsepower gains
• Improved everyday drivability

Unlike inferior calibrations, OE Match software maintains safe air-fuel ratios, ensuring the engine continues to run efficiently while avoiding the lean conditions that can reduce performance and increase knock sensor activity.

Includes the Lightweight Flywheel (LWF) Fix

Every calibration includes the latest Lightweight Flywheel Fix, eliminating the stalling and RPM dip commonly experienced after fitting an RS lightweight flywheel and clutch. The software also improves clutch engagement and throttle response while remaining fully compatible with standard flywheel vehicles.

Developed Specifically for Your 964

Unlike generic performance chips, every OE Match calibration has been developed through extensive dyno testing and real-world road evaluation using premium pump fuel. Each program is written specifically for your engine and exhaust configuration, delivering maximum performance without triggering the Check Engine Light.

Suitable for:

• Porsche 964 Carrera 2 & Carrera 4 Manual or Tiptronic transmission
• Premuffler Cat bypass pipe
• Sports catalytic converter
• Factory, sports or bypass rear silencers
• Factory or RS lightweight flywheel
  
  

Benefits

• Increased horsepower and torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm hesitation
• Improved acceleration throughout the rev range
• Smoother idle
• Eliminates lightweight flywheel stalling
• Better everyday drivability
• Dyno-developed Bosch Motronic calibration
• Will not trigger the Check Engine Light

Porsche 964 Premuffler & Cat Bypass Performance Chips

OE Match Performance Chips are specifically developed for Porsche 964 models fitted with freer-flowing exhaust systems. By recalibrating the Bosch Motronic ECU to suit premufflers, cat bypass pipes or sports catalytic converters, the engine delivers stronger torque, improved throttle response and smoother power delivery while maintaining safe engine operation.

Whether your 964 is fitted with a standard or lightweight flywheel, manual or Tiptronic transmission, Design911 offers model-specific OE Match calibrations engineered to maximise performance and reliability.

Performance Upgrade Chip –  with Sports Headers and Sport Muffler

Unlock the true performance potential of your 1989-1994 Porsche 964 Carrera 2 or Carrera 4 with the OE Match Performance Upgrade Chip. Developed specifically for cars fitted with performance headers and a sports muffler, this calibration is designed for manual and Tiptronic models, with or without an RS lightweight flywheel, and includes the latest LWF software fix as standard.

Fits:

• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93

 
Designed for Performance Exhaust Systems

Performance headers and sports mufflers significantly improve exhaust flow, but to extract the maximum benefit the Bosch Motronic ECU requires recalibration. OE Match software has been specifically developed to provide the additional fuel and optimised ignition timing needed for freer-flowing exhaust systems, ensuring safe air-fuel ratios while preventing excessive knock sensor intervention.

The result is a dramatic improvement in the way your 964 drives, including:

• Increased low and mid-range torque
• Sharper throttle response
• Elimination of the factory flat spot below 4,000 rpm
• Smoother idle
• Dyno-proven horsepower gains
• Improved acceleration and everyday drivability

The engine comes alive from low RPM, making the car feel noticeably lighter and more responsive whether you're driving on the road or attacking your next track day or autocross.

Dyno Developed for Real-World Driving

Unlike generic replacement chips, OE Match calibrations are written specifically for each engine and exhaust configuration.

Every program has been extensively developed through hundreds of hours of dyno tuning, road evaluation and real-world testing using everyday pump fuel. Ignition timing, fuel delivery and throttle mapping have all been optimised to deliver:

• Smoother idle
• Increased low and mid-range torque
• Sharper throttle response
• Elimination of the factory sub-4,000 rpm flat spot
• Stronger acceleration throughout the rev range
• Dyno-proven horsepower gains
• Improved everyday drivability

Unlike inferior calibrations, OE Match software maintains safe air-fuel ratios, ensuring the engine continues to run efficiently while avoiding the lean conditions that can reduce performance and increase knock sensor activity.

Includes the Lightweight Flywheel (LWF) Fix

Every OE Match calibration includes the latest Lightweight Flywheel Fix, eliminating the stalling and RPM dip commonly associated with RS lightweight flywheel conversions. The software also improves clutch engagement and throttle response while remaining fully compatible with standard flywheel cars.

Developed Specifically for Your 964

Unlike generic replacement chips, every OE Match calibration has been extensively developed through dyno testing and real-world road evaluation using premium pump fuel. Each program is tailored to your exact engine specification and exhaust configuration, delivering maximum performance without triggering the Check Engine Light.

Suitable for:

• Porsche 964 Carrera 2 & Carrera 4 Manual or Tiptronic transmission
• Performance headers Sports muffler
• Factory or RS lightweight flywheel

Benefits

• Increased horsepower and torque
• Sharper throttle response
• Eliminates the factory sub-4,000 rpm hesitation
• Improved low and mid-range acceleration
• Smoother idle
• Eliminates lightweight flywheel stalling
• Better everyday drivability
• Dyno-developed Bosch Motronic calibration
• Will not trigger the
• Check Engine Light

Porsche 964 Performance Chips for Headers & Sport Mufflers

OE Match Performance Chips are specifically developed for Porsche 964 models equipped with performance headers and sports mufflers. By recalibrating the Bosch Motronic ECU to suit the increased exhaust flow, the engine delivers stronger torque, improved throttle response and greater horsepower while maintaining safe operation and factory reliability.

Design911 offers model-specific OE Match calibrations for manual and Tiptronic 964 models, including vehicles fitted with RS lightweight flywheels. Every calibration is developed to maximise the performance of your exhaust upgrades while preserving excellent drivability.