What Is ECU Remapping?
Most modern vehicles contain an ECU (Engine Control Unit) that is effectively a computer which controls how the engine works which it works out from various sensors within the engine bay. Vehicle manufacturers de-tune the engine by setting the software on the ECU to a base level before selling vehicle on a forecourt. This is so that manufacturers can sell their cars all over the world, this means that the software settings on the ECU must take into account different climates, laws & restrictions and varying grades of fuels. Vehicle remapping is basically the reprogramming of the manufactures base software on a vehicles ECU.
So What Are The Effects Of ECU Remapping?
Many people say that ECU remapping does not have an affect on MPG, this generally is not technically true. Because of what is involved in ECU remapping, more fuel will be consumed in order to produce the increase in power and torque from the engine. If the car is driven in an enthusiastic way after the remap has been done, then the fuel economy will not get any better (and in some cases may get worse). If, however, the driver alters the way they drive to match the increased power and torque throughout the rev range then MPG can and will be better by up to 30%. A good example of this is an improvement in torque produced by the engine after a remap means the driver no longer has to go down the gearbox to maintain speed on a hill thus holding a higher gear and not have to change gear as frequently. The torque increase along with better emissions and cleaner running engine equal better MPG.
Are There Any Disadvantages?
Some people have reported engine damage from ECU remapping, but this is exceptionally rare. In order to offer our customers total peace of mind Remap-UK offer a lifetime warranty on the software that is used, as well as a full mechanical breakdown package for vehicles with fewer than 10000 miles or 1 year old.