ECU Re-Mapping DIY

OE Match Performance Upgrade Chip ROW/Euro Spec with SSI or Race/Performance Headers

Unlock the full benefit of your upgraded exhaust system with this OE Match Performance Upgrade Chip, developed specifically for ROW and European specification Porsche 911 Carrera 3.2 models fitted with SSI heat exchangers or race/performance headers.

 Fits:

• Porsche 911 1984-1986 3.2L  

The factory Bosch Motronic DME calibration was designed around the airflow characteristics of the original exhaust system. When SSI heat exchangers, tubular manifolds or high-flow performance headers are installed, the engine can move more air, but the original software cannot fully optimise the revised exhaust flow. This purpose-developed chip recalibrates ignition timing, fuel delivery and throttle response to help the 3.2-litre flat-six make proper use of those modifications.

The result is a smoother idle, stronger low and mid-range torque, sharper throttle response and noticeably improved acceleration from as low as 1,500rpm. The familiar hesitation below 4,000rpm is significantly reduced, giving the engine a broader, more responsive and more usable powerband.

This is not a generic one-size-fits-all chip. The programme has been developed through extensive code revisions, road testing and dynamometer evaluation on a wide range of Carrera 3.2 engines. The calibration is tailored for ROW/Euro engines equipped with SSI or performance manifolds, helping to deliver dependable gains while preserving everyday drivability.

Specifically Developed for SSI and Performance Header Applications

This version is intended for Porsche 911 Carrera 3.2 models fitted with:

• SSI heat exchangers
• Race headers
• Performance exhaust manifolds
• Free-flow tubular headers
• Modified rear exhaust systems
• Standard or mildly uprated induction systems

The revised calibration takes account of the increased exhaust flow created by these components, helping the engine operate more efficiently across the rev range.

For ROW and Euro specification vehicles, the standard programme is calibrated for 95 RON premium unleaded fuel. A dedicated 98 RON version is also available for owners who consistently use higher-octane fuel and want the calibration optimised accordingly.

What Does the Performance Upgrade Chip Do?

The chip replaces the original EPROM programme inside the Bosch Motronic DME and revises key engine management parameters.

The calibration optimises:

• Ignition timing
• Full-load fuelling
• Part-throttle fuelling
• Throttle response
• Low-speed torque delivery
• Mid-range power
• Idle control
• Deceleration behaviour
• Rev-range performance
• Compatibility with increased exhaust flow

At full throttle, the Motronic system operates from its programmed fuel and ignition maps. Without revised software, performance exhaust modifications can be restricted by the original factory calibration. This chip provides the additional fuel and ignition optimisation required to make better use of SSI systems and high-flow headers.

Improved Low and Mid-Range Torque

One of the most noticeable benefits is the improvement in everyday performance.

The revised mapping delivers stronger torque from approximately 1,500rpm, making the car more responsive without requiring high engine speeds. Acceleration becomes more immediate, overtaking requires fewer downshifts and the engine pulls more strongly through the middle of the rev range.

Typical improvements include:

• Sharper throttle response
• Stronger low-rpm acceleration
• Improved mid-range torque
• Reduced hesitation below 4,000rpm
• More progressive power delivery
• Greater flexibility in higher gears
• Improved response during fast road and autocross driving

The car feels more eager and significantly lighter on its feet because the engine responds more quickly to small throttle inputs.

Smoother Idle and Improved Drivability

The proprietary calibration has also been developed to improve common Carrera 3.2 drivability characteristics.

It can help reduce:

• Idle hunting
• Sub-idle rpm dipping during deceleration
• Hesitation when returning to idle
• Deceleration backfiring
• Uneven part-throttle response
• Low-speed flat spots

The result is a more refined engine at idle and a smoother transition between closed throttle, part throttle and full acceleration.

Expected Performance Gains

Typical reported gains include:

• Approximately 6–8% increase in horsepower and torque across the powerband
• Around 12–16hp on otherwise standard engines
• Approximately 20 lb-ft of additional torque through portions of the rev range
• Around 10–20% improvement in part-throttle torque, horsepower and efficiency
• Stronger power delivery from 1,500rpm through to the rev limit
• Potentially greater gains on engines with SSI systems, polished intake runners and other airflow improvements

In selected areas of the rev range, particularly near 6,500rpm, gains may be substantially higher than the peak-to-peak figure because the revised calibration reduces the power drop-off found in the standard mapping.

Actual results vary depending on engine condition, fuel quality, exhaust specification, induction setup and dynamometer method.

Why Exhaust Modifications Need Matching Software

SSI heat exchangers and performance headers can substantially improve exhaust gas flow, but hardware changes alone do not automatically deliver their full potential.

The standard DME programme remains calibrated for the original exhaust system. Under full load, it follows pre-programmed fuelling and ignition values and cannot fully compensate for increased airflow.

A correctly matched chip helps by:

• Supplying appropriate fuel under load
• Optimising ignition timing
• Improving exhaust and induction compatibility
• Supporting stronger high-rpm performance
• Preventing the factory map from restricting upgraded hardware
• Maximising the performance value of SSI or header installation

This makes the chip one of the most cost-effective supporting modifications available for a Carrera 3.2 fitted with a freer-flowing exhaust system.

Potential Fuel Economy Improvement

Although developed primarily for performance, the revised part-throttle calibration can also improve cruising efficiency.

Many customers report a 10–15% improvement in highway fuel economy, depending on driving style, vehicle condition, fuel quality and operating conditions. These figures should be treated as user-reported results rather than guaranteed savings.

Benefits

Installing this OE Match Performance Upgrade Chip can provide:

• More usable horsepower
• Stronger acceleration
• Improved low-speed flexibility
• Greater mid-range performance
• Better response from SSI and performance headers
• Smoother idle quality
• Improved part-throttle operation
• A broader and more responsive powerband
• Potential motorway fuel economy improvements
• Excellent performance gain for the cost
• A more engaging and enjoyable driving experience

Installation and Ordering Recommendations

Professional installation is recommended.

Before ordering, confirm:

• The vehicle is a ROW or European specification Porsche 911 Carrera 3.2
• The car is fitted with SSI heat exchangers or race/performance headers
• The DME chip pin configuration is correct for the vehicle
• The preferred fuel calibration is 95 RON or 98 RON
• Any additional engine modifications are declared

Before installation, inspect:

• Spark plugs
• Distributor cap and rotor arm
• Ignition leads
• Fuel injectors
• Fuel pressure
• Airflow meter
• Intake hoses and vacuum lines
• Valve clearances
• Engine service condition

A healthy engine and correctly maintained fuel and ignition systems are essential for achieving the intended performance gains safely.

OE Match Performance Upgrade Chip – ROW/Euro Spec with Standard or Sport Rear Silencer

Unlock the hidden performance within your ROW/European specification Porsche 911 Carrera 3.2 with this OE Match Performance Upgrade Chip, specifically developed for Bosch Motronic DME-equipped cars fitted with either the standard rear silencer or a sport rear silencer.
 
Fits:

• Porsche 911 1984-1986 3.2L  

Unlike generic ECU chips that simply alter a few fuel or ignition values, this calibration has been completely developed from the ground up. Hundreds of hours of software development, extensive road evaluation and chassis dyno testing across more than one hundred Porsche 3.2 Carrera models have resulted in a highly refined engine management programme that transforms the way the iconic air-cooled flat-six performs.

The result is a smoother, stronger and significantly more responsive engine, delivering increased torque from as little as 1,500rpm, improved throttle response throughout the rev range and measurable horsepower gains—all while maintaining factory reliability when used with the recommended fuel grade.

Whether your Carrera is completely standard or fitted with a sports rear silencer, this bespoke calibration is designed to maximise the engine's true potential.

Specifically Developed for ROW / European Specification Cars

This version has been calibrated exclusively for European and Rest of World (ROW) Porsche 911 Carrera 3.2 models.

Unlike universal chips, the calibration has been optimised for:

• ROW / European engine specifications.
• Standard rear silencer.
• Sport rear silencer.
• Bosch Motronic DME management.
• Factory engine components.
• Mildly modified engines.

The standard programming is designed for 95 RON premium unleaded fuel.

For customers regularly using 98 RON fuel, an optional dedicated calibration is available to extract even greater performance while maintaining safe engine operation.

Developed Specifically for the Porsche 3.2 Carrera

The factory Motronic calibration was engineered to satisfy worldwide emissions legislation, varying fuel quality and production tolerances. While extremely reliable, it leaves considerable performance untapped.

This OE Match Performance Upgrade Chip completely re-engineers the original software by optimising:

• Ignition timing maps.
• Fuel delivery.
• Part-throttle fuelling.
• Full-load enrichment.
• Torque delivery.
• Throttle response.
• Idle control strategy.
• Deceleration characteristics.

Every calibration has been extensively refined through road and dyno testing to produce performance improvements that are immediately noticeable from the moment you drive away.

Noticeable Improvements in Everyday Driving

This upgrade transforms far more than peak horsepower.

Owners typically notice:

• Smoother idle quality.
• Virtually eliminated idle hunting.
• Reduced sub-idle RPM dip during deceleration.
• Reduced exhaust popping and backfiring on overrun.
• Sharper throttle response.
• Stronger acceleration from low engine speeds.
• Improved flexibility in everyday driving.
• More immediate engine response from just 1,500rpm.
• Elimination of the familiar flat spot below 4,000rpm.

The improved torque delivery gives the impression that the car has shed significant weight, making the Carrera feel substantially more eager throughout the rev range.

Proven Performance Gains

Typical gains include:

• 6–8% increase in horsepower and torque across the powerband.
• Approximately 12–16 bhp increase on a standard engine.
• Around 20 lb-ft improvement in torque through much of the rev range.
• 10–20% improvement in part-throttle torque and engine efficiency.
• Significant gains approaching the top of the rev range, with improvements of up to 25–35 bhp around 6,500rpm under certain operating conditions. Stronger acceleration from 1,500rpm through to the rev limiter.

Cars fitted with additional modifications such as polished intake runners or a performance exhaust system may achieve even greater gains, as the revised ignition and fuel mapping allows the engine to make full use of the increased airflow.

Optimised for Performance Exhaust Systems

Many Carrera owners install sports silencers expecting significant performance improvements, but the factory DME continues to use conservative ignition and fuelling maps.

This Performance Upgrade Chip is specifically calibrated to complement:

• Standard rear silencers.
• Sports rear silencers.
• Improved exhaust flow.
• Freer-breathing intake systems.

By optimising both ignition timing and fuelling, the engine is able to fully exploit these modifications, resulting in greater performance than exhaust upgrades alone.

Improved Fuel Efficiency

Performance and efficiency do not have to be mutually exclusive.

Thanks to improved ignition timing and more efficient part-throttle calibration, many owners report highway fuel economy improvements of approximately 10–15%, depending on driving style, vehicle condition and operating conditions.

Benefits

Installing this OE Match Performance Upgrade Chip provides:

• Increased horsepower and torque.
• Improved low-speed flexibility.
• Faster throttle response. Smoother idle.
• Better drivability in everyday traffic.
• More responsive overtaking performance.
• Enhanced compatibility with sports exhaust systems.
• Improved engine efficiency. Potential improvement in motorway fuel economy.
• Greater enjoyment every time you drive.

Installation Recommendations

Professional installation is recommended.

Before installing the Performance Upgrade Chip, Design911 recommends ensuring:

• Ignition components are in good condition.
• Spark plugs are correctly specified.
• Fuel injectors are clean and operating correctly.
• Fuel pressure is within specification.
• The airflow meter is functioning correctly.
• There are no intake air leaks.
• Valve clearances are correctly adjusted.
• Oxygen sensor (where fitted) is functioning correctly.
• The engine is fully serviced.

Selecting the correct software calibration for your fuel grade and engine specification will ensure maximum performance and long-term reliability.

OE Match Performance Upgrade Chip – USA/Canada Specification Pre-muffler / Cat Bypass Configuration

Unlock the full potential of your 1984-1986 USA/Canada specification Porsche 911 3.2 Carrera with the OE Match Performance Upgrade Chip, developed specifically for 930/21 and 930/25 catalyst engines fitted with a pre-muffler or catalytic converter bypass pipe, together with either the factory rear silencer or a sports muffler.

Fits:

• Porsche 911 1984-1986 3.2L

Replacing the restrictive catalytic converter allows the engine to breathe more freely, but without optimised Bosch Motronic calibration the full performance benefits cannot be realised. This OE Match chip has been specifically engineered to complement a premuffler or cat bypass exhaust, optimising ignition timing and fuel delivery to maximise both performance and drivability.

Planning to install a premuffler or cat bypass later? No problem. This chip can be installed now and used with the standard catalytic converter before upgrading the exhaust at a later date, allowing you to enjoy immediate improvements while remaining fully compatible with your planned modifications.

Designed for Maximum Drivability

Developed through hundreds of hours of coding, road testing and dyno development on more than one hundred Carrera 3.2 models, this is far more than a generic replacement EPROM.

Exclusive OE Match software delivers:

• Smoother idle with virtually no idle hunting
• Increased low and mid-range torque
• Sharper throttle response
• Elimination of the factory flat spot below 4,000 rpm
• Reduced deceleration backfiring and RPM dipping
• Strong pulling power from as little as 1,500 rpm
• Dyno-proven horsepower and torque gains throughout the rev range

The transformation is immediate, making the car feel lighter, more responsive and significantly more enjoyable to drive. Many owners describe the improvement as feeling like the car has lost 500-600 pounds in weight.

Many customers also report 10-15% improvements in highway fuel economy, thanks to more efficient part-throttle mapping.

Engineered Specifically for Premuffler & Cat Bypass Cars

Unlike generic performance chips, this calibration has been developed specifically for Carrera 3.2 models equipped with a premuffler or catalytic converter bypass. By matching the engine management to the improved exhaust flow, the Bosch Motronic system can fully exploit the benefits of the freer-flowing exhaust while maintaining excellent reliability and everyday usability.

Benefits

• Increased horsepower and torque
• Improved throttle response
• Eliminates the factory low-RPM hesitation
• Stronger mid-range acceleration
• Smoother idle quality
• Better drivability
• Potential improvements in fuel economy
• Maximises the benefits of a premuffler or cat bypass exhaust

Why Choose OE Match?

OE Match Performance Chips are individually calibrated for specific Porsche engine and exhaust configurations rather than relying on generic software. This model has been engineered specifically for USA and Canada specification Carrera 3.2 models running a premuffler or catalytic converter bypass, delivering outstanding drivability, sharper performance and maximum value from your exhaust upgrade.

Porsche 911 Carrera 3.2 Premuffler & Cat Bypass Performance Chips

Installing a premuffler or catalytic converter bypass is one of the most popular upgrades for the Porsche 911 Carrera 3.2, reducing exhaust restriction and improving engine breathing. To unlock the full benefit of these modifications, the Bosch Motronic engine management should be recalibrated to match the revised exhaust characteristics.

OE Match Performance Chips specifically developed for catalyst-equipped USA and Canada Carrera models, ensuring the ignition and fuel maps are optimised for freer-flowing exhaust systems. Whether you're fitting a premuffler today or planning a future exhaust upgrade, these calibrations deliver improved throttle response, stronger torque and a more engaging driving experience.

OE Match Performance Upgrade Chip – USA/Canada Specification with SSI or Performance Headers

Unlock the full performance potential of your 1984-86 USA/Canada specification Porsche 911 Carrera 3.2 with the OE Match Performance Upgrade Chip, developed specifically for 930/21 and 930/25 catalyst engines converted to SSI heat exchangers or performance headers, while retaining either the factory rear silencer or a sports muffler.

Fits:

• Porsche 911 1984-1986 3.2L

SSI and performance headers significantly improve exhaust gas flow compared with the restrictive factory exhaust system. However, without recalibrating the Bosch Motronic ECU, the engine cannot fully exploit these improvements. This OE Match chip has been specifically developed to optimise ignition timing and fuel delivery for freer-flowing exhaust systems, unlocking additional horsepower, stronger torque and noticeably sharper throttle response.

Developed for Maximum Performance

Unlike generic replacement chips, the OE Match Performance Chip has been developed from the ground up. Hundreds of hours of software development, road testing and dyno evaluation across more than one hundred Carrera 3.2 models have produced a calibration that transforms the way your Porsche drives.

Exclusive OE Match programming delivers:

• Smoother idle with virtually no idle hunting
• Increased low and mid-range torque
• Sharper throttle response
• Elimination of the factory flat spot below 4,000 rpm
• Reduced RPM dipping and deceleration backfiring
• Stronger pulling power from just 1,500 rpm
• Dyno-proven horsepower and torque gains throughout the rev range

The result is a Carrera that feels more responsive and eager, with stronger acceleration across the entire power band. Many owners describe the transformation as making the car feel 500-600 pounds lighter.

Many customers also report 10-15% improvements in highway fuel economy, thanks to more efficient part-throttle mapping.

Designed for SSI & Performance Header Conversions

This calibration has been specifically engineered for:

• 1984-86 USA & Canada specification Porsche 911 Carrera 3.2
• Engine codes 930/21 and 930/25
• SSI heat exchanger conversions
• Performance header exhaust systems
• Standard or sports rear silencers
• Bosch Motronic DME engine management

By matching the ECU calibration to the improved exhaust flow, the engine delivers stronger performance throughout the rev range while maintaining smooth idle quality and excellent everyday drivability.

Why Choose OE Match?

This is not a generic "one-size-fits-all" chip. Every OE Match calibration is tailored to a specific Porsche engine and exhaust configuration, ensuring the Bosch Motronic system is fully optimised for your vehicle.

Developed through extensive research, dyno testing and real-world evaluation, each chip delivers measurable performance improvements while maintaining factory reliability.

Benefits

• Increased horsepower and torque
• Faster throttle response
• Eliminates the factory low-RPM hesitation
• Stronger acceleration throughout the rev range
• Smoother idle quality
• Reduced overrun backfiring
• Improved everyday drivability
• Potential improvements in fuel economy
• Maximises the performance gains from SSI and performance header exhaust systems

Porsche 911 3.2 Carrera Performance Chips for SSI & Performance Headers

Upgrading to SSI heat exchangers or performance headers is one of the most effective ways to improve the breathing of the Porsche 911 3.2 Carrera. To maximise the benefits of these exhaust upgrades, the Bosch Motronic engine management should be recalibrated to suit the increased exhaust flow.

OE Match Performance Chips are specifically developed for USA and Canada specification Carrera models fitted with SSI or performance headers. Each calibration is designed to improve torque, throttle response, drivability and overall engine performance while preserving the reliability and character of Porsche's legendary air-cooled flat-six.

OE Match Performance Upgrade Chip – USA/Canada Specification Catalyst Engines 930/21 & 930/25

Unlock the full potential of your 1984-1986 USA and Canada specification Porsche 911 Carrera 3.2 with this OE Match Performance Upgrade Chip, specifically developed for 930/21 and 930/25 catalyst-equipped engines running a standard engine configuration with the factory catalytic converter and either the original rear silencer or a sports muffler.

Fits:

• Porsche 911 1984-1986 3.2L

Developed exclusively for Bosch Motronic-equipped Carrera 3.2 models, this is far more than a generic replacement EPROM. Starting with a completely blank slate, every ignition and fuel map has been painstakingly re-engineered through hundreds of hours of coding, extensive road evaluation and dyno testing across more than one hundred Carrera 3.2 vehicles. The result is one of the most thoroughly developed Motronic calibrations available for the air-cooled Porsche 911.

Not Just Another Performance Chip
Unlike many aftermarket chips that simply alter a handful of ignition values, the OE Match Performance Chip completely reworks the Motronic calibration to improve drivability, throttle response and power delivery throughout the entire rev range.

Exclusive proprietary code algorithms—developed specifically for the Porsche 3.2 Carrera and unavailable elsewhere—deliver noticeable improvements in every aspect of engine performance while maintaining the reliability expected from a road-going Porsche.

The result is an engine that feels sharper, smoother and considerably more responsive, transforming the overall driving experience every time you get behind the wheel.

Developed Specifically for Standard Catalyst Cars

• This calibration has been engineered for:
• 1984-1986 USA & Canada specification Porsche 911 Carrera 3.2
• Engine codes 930/21 and 930/25
  
• Standard engine configuration
• Factory catalytic converter
• Standard rear silencer or sport rear muffler
• Bosch Motronic DME engine management

By optimising the ignition timing and fuel delivery for the factory catalyst exhaust system, this chip extracts significantly more performance while retaining excellent road manners and everyday usability.

Smoother Idle, Stronger Torque and Sharper Response
One of the first improvements most owners notice is how much smoother and more refined the engine becomes.

The revised calibration has been specifically developed to:

• Virtually eliminate idle hunting
• Reduce sub-idle RPM dipping during deceleration
• Minimise overrun popping and deceleration backfiring
• Deliver much stronger throttle response
• Increase low and mid-range torque
• Remove the familiar hesitation below 4,000 rpm
• Produce smoother acceleration throughout the rev range

Power delivery begins from as little as 1,500 rpm, making the car considerably more flexible during everyday driving while maintaining the exciting top-end characteristics of the Carrera 3.2 engine.

Many owners describe the transformation as making the car feel 500-600 pounds lighter, with noticeably stronger acceleration and a much more eager character.

Dyno-Proven Performance
The improvements are not limited to peak horsepower.

Extensive dyno development has produced measurable gains throughout the entire powerband, including:

• Approximately 6-8% increase in horsepower and torque
  
• Around 12-16 additional horsepower
  
• Up to 20 lb-ft of additional torque through much of the rev range
  
• Significantly stronger part-throttle performance
• Sharper throttle response
• Elimination of the factory low-RPM flat spot
• Strong acceleration from 1,500 rpm through to the rev limiter

With further engine modifications, even greater gains can be achieved as the restrictive factory mapping becomes increasingly limiting.

Improved Everyday Drivability
Unlike upgrades that only benefit maximum power, this calibration transforms how the car behaves in normal driving.

Drivers can expect:

• Quicker overtaking
• Less need to downshift
• Improved flexibility in higher gears
• Better throttle modulation through corners
• More responsive acceleration exiting bends
• Greater confidence during spirited road driving and autocross events

The improvement in low-speed torque also makes the car considerably easier and more enjoyable to drive in everyday traffic.

Potential Fuel Economy Improvements
Although performance is the primary objective, the revised part-throttle mapping also improves engine efficiency.

Many customers report 10-15% improvements in highway fuel economy, depending on driving style, engine condition and operating conditions.

Built on Extensive Research
This is not a "one size fits all" performance chip.

Development began with a completely new software strategy rather than simply modifying the original factory programme.

Hundreds of hours of code revisions, road testing and chassis dynamometer development across more than one hundred Porsche Carrera 3.2 models have identified performance improvements previously left untapped within the Bosch Motronic system.

The result is a calibration that delivers measurable gains in power, drivability and refinement while maintaining safe operating parameters for long-term engine reliability.

Porsche 911 Carrera 3.2 Performance Chips and Bosch Motronic Upgrades

The Bosch Motronic engine management system fitted to the Porsche 911 Carrera 3.2 responds exceptionally well to carefully developed ECU calibration. While the factory software was designed to satisfy emissions, fuel quality and production requirements of the mid-1980s, modern development techniques allow significant improvements in throttle response, torque delivery and overall drivability without compromising reliability.

OE Match Performance Chips are developed for specific Porsche 911 Carrera 3.2 configurations, including USA, Canada, ROW and European specification vehicles, catalyst and non-catalyst engines, standard exhaust systems and modified performance applications.

Whether you're looking to improve everyday drivability, sharpen throttle response or maximise the performance of your air-cooled flat-six, our Bosch Motronic upgrades are designed to deliver noticeable improvements while maintaining factory-quality reliability.

Why Upgrade Your Porsche 911 Carrera DME Chip?

• A professionally developed DME performance chip helps to:
• Optimise ignition timing
• Improve fuel delivery
• Increase low and mid-range torque
• Enhance throttle response
• Reduce flat spots and hesitation
• Improve drivability
• Deliver stronger acceleration
• Maximise the performance of standard and sports exhaust systems
• Improve part-throttle efficiency
• Unlock the true potential of the Porsche 3.2 Carrera engine