Car & 4x4 Tuning


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.


The engine in all modern vehicles is controlled electronically by an ECU, which is constantly processing formation received from a multitude of sensors. The engine’s fuelling, ignition timing, boost if applicable, torque values, etc, are all calibrated within the ECU code based on the conditions in which the vehicle is being used, its altitude, the quality of the fuel in its tank, and so on. Together with the sensor information the relevant tables, or ‘maps’, are used to keep the engine running at optimal performance – whether it is being asked to deliver high or low output.