ECU Re-mapping is when we down load the file from your cars ECU and adjust it to maximise the performance and efficiency of your engine. This is achieved by removing many of the compromises that the manufacturer programmed into the ECU. These restrictions are in place to cover the possibility of sub-standard fuel and possible engine neglect, Often the manufacturers restrict these engines just so they will fit into a certain market, because of tax situations, or to suit fleet buyers. You as a driving enthusiast you do not need these limitations on your cars ECU, so with our remap you can benefit from the hidden power and torque locked away within the ECU.


At Williams we rewrite the software on your engine's ECU to totally transform your car. We safely gain power and torque, so improve driveability, then there is the added bonus of enhanced fuel economy to both diesel and petrol engines. With our vast experience of tuning cars, attention to the finest detail, and years of tuning expertise, our remaps produce real results that are quite simply second to none.

Contact us today to see how we can help you.