What is remapping?
The modern car engine is controlled by a small computer, this adjust and changes many settings which will include timing advance, fuel delivery and turbo boost dependent on the demands of the engine. The computer known as the ECU (Engine Control Unit) has software written to suit the use of the vehicle across the world taking into consideration fuel quality, altitude and climate. By accessing this software and making specific changes to it more power or better MPG can be gained from the engine . In the case of turbo diesel engines it is possible to achieve both!
Depending on the vehicle and type of ECU there are different techniques required to download a copy of the program, once downloaded changes are made to the coding within the software and then uploaded into the ECU.
What is Chip Tuning?
Chip Tuning is in some ways the original process for remapping cars. Previously to make changes to the software within the ECU, it was necessary to remove the ‘chip’ also known as the EPROM from the circuit board and extract the program via a chip reader. The process is still used on older cars that as a rough rule of thumb are prior to the year 2000 before the generic OBD port was introduced on to cars. So although the process is different the overall improvements are still subject to the hidden gains within the engine.
Why Choose To Remap?
There are many reasons to remap a vehicle, the majority are to improve performance on the vehicle. One of the additional benefits which doesn’t seem to be widely known is the improvement to be had in driveability you get after remapping. If you are looking for better performance there will certainly be an improvement in the overall torque and power from the engine, but in additional the power delivery will be smoother with a sharper throttle response giving a greater driving experience.
Remapping for economy (turbo diesels only) often raises the question on how the car will drive, with the concern that to achieve the economy will require the vehicle to lack performance. This certainly isn’t the case, economy is achieved by concentrating more on the torque delivery of the engine and there is a noticeable improvement in the driving experience.