What is Remapping my Car?

Every modern vehicle has an onboard computer known as an ECU or an Electronic Control Unit. This computer is responsible for controlling the behaviour of your vehicle but through remapping, you can overwrite the existing setting to change the performance of the vehicle. Therefore, we can reprogram the car to manage the fuel injection, airflow, sensors and more.

What is ECU Remapping and Programming

When a manufacturer develops a new car they have to take into consideration all of the conditions it may be subjected to in all of the regions in which they intend to sell this model. This means instead of just optimising the ECU’s program or ‘map’ to deliver the best performance or the most fuel efficiency they have to make compromises to the map to take into account these potential differing operating conditions. These could include sub-standard fuels, extremes in temperature and altitude, differing emission laws and even the possibility that vehicle may not be serviced on a regular basis and in accordance with the manufacturers recommended instructions.


ECU remapping is taking a read from the ECU’s processing chip of the vehicles standard compromised map and adjusting various parameters within the map such as fuel pressure, boost pressure (on turbocharged applications) ignition advance and throttle pedal control amongst others to release the true performance from the engine. It is a completely safe process as it is just giving the engine the performance it should have had in the first place before all the compromises were applied to the original programming. Every engine will have its own unique map and by adjusting this we can fine tune the characteristics of the engine; unleashing more power and in many cases reduce fuel consumption too.

How Does Remapping Work?

When we remap a car, we will use the latest technology and connect to the software on the ECU. We will then change the manufacturer’s settings and replace them with new software that can be changed and customised based on your needs.

Opting to remap your vehicle will enable you to change the performance. We have expertise that ensures we know exactly what we are doing and we use this to make the right changes, regardless of your vehicle. We will change how the engine performs and from that, you will experience many different benefits. 

Through remapping, we can increase the power of your car, helping to improve its speed and performance. In some instances, it is also possible to improve fuel consumption. You will benefit from a car that could be more efficient, responds better and deliver a more enjoyable driving experience.

circuit board ECU Remapping in Surrey
Car engine being remapped in Surrey

Benefits of ECU Remapping and Programming

ECU programming will not only improve the engines power and torque figures, it will also sharpen the throttle response and widen the power-band. This will make the power delivery a lot more linear, which in turn will make the vehicle feel livelier to drive and the engine more flexible. Frequently, the vehicle’s power output is restricted by the manufacturer for no other reason than to ensure that it fits into a class to suit fleet buyers. As a driving enthusiast, you do not need or want such restrictions placed upon your vehicle’s ECU, so with a conversion you can benefit from the hidden power and torque locked away within your engine management system.

The other main benefit of remapping will be a reduction in fuel consumption. With the extra torque – especially at the bottom of the rev range – you will see a fuel saving as it will require less throttle input to maintain motorway speeds; you can drive in a higher gear at a slower speed; and the additional power is especially useful when fully laden, towing, or on gradients.

Why Should You Remap Your Vehicle?

Our remapping service is proven to bring excellent results and our many previous clients will support our promise. Remapping your vehicle will bring with it a wealth of benefits but the idea of enhanced performance of up to 35% and a saving of 15% on fuel costs is often a deciding factor for many. 


At Surrey Remapping Co, we can help you to tackle rising fuel costs and still enjoy every second behind the wheel. 


Did you know that fuel consumption figures for new cars are actually around 20% worse than those provided by manufacturers? The average fuel cost is rising and that is something that motorists have to live with although remapping does provide a simple yet effective solution. We can help to optimise performance through remapping, giving your vehicle even more. We use the latest diagnostic tools and that enables us to carry out a full health check of your vehicle before we carry out ECU tuning.

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