Remapping is the simplest form of stage 1 engine tuning. It is performed mostly on turbocharged vehicles containing a modern Engine Control Unit (ECU). Almost all modern vehicles have an ECU, primarily supplied by Bosch or Delphi Technologies. The ECU has firmware that controls the various parameters under which the engine runs. Many factory firmwares fail to utilise the full potential of the engine, and as such leave the end-user with an under-tuned engine.

Parameters of factory files such as fuel injection, boost pressure, rail pressure, fuel pump pressure and ignition timing, are adjusted to safe limits that are set by an expert so the unlocked performance does not compromise the car's safe levels of reliability, fuel consumption and emissions. The map may be customized for city use, for on-track performance, or for an overall map giving power throughout the band in a linear manner. Once adjusted, the edited file is written back to the ECU with the same tools used for the initial reading, after which the engine is tested for performance, smoke levels, and any problems. Fine-tuning is done according to the feedback, producing a better-performing and more efficient engine.

Why should you remap your car?

• Up to ∼40% more horsepower and torque
• Up to ∼40% savings on fuel
• More responsive engine - easier overtaking
• Overall better driving experience