What is ECU remapping?
Remapping is a software modification within a vehicle's engine control unit (ECU). We modify the operating parameters within the code (or 'map') to increase the vehicle's performance and/or economy, without the need to change or add any hardware.
In many cases the data stored within the ECU can be accessed via the onboard diagnostics port (OBD).
In some cases the ECU needs to be removed for the modification to be carried out on the bench.
Benefits of Remapping?
Remapping will not only improve your cars power and torque, it will also sharpen the throttle response and widen the power-band. Another main benefit of remapping will be an increase in MPG. With the extra torque you will see a fuel saving as it will require less throttle input to maintain motorway speeds.
When a manufacturer releases new vehicles, the power output is restricted by the manufacturer as it's got to cope with a whole host of different environments, uses and operating conditions. So the manufacturer will release the vehicle with a fairly generic ECU that's built to cope with unpredictable variables such as sub-standard fuels and irregular servicing.
As a driving enthusiast, you do not need or want any restrictions on your vehicle or its performance. Remapping will release the hidden power and torque.
What is chip tuning?
A chip is an electronic storage device which is located on a circuit board inside the ECU. The chip contains the map data in a binary form.
Chip tuning is the term used to remap an ECU when the data can not be read via the OBD port or on Bench. In order to obtain the data, the chip has to be removed from the ECU circuit board. Once removed we can obtain the data direct from the chip, make our modifications to the software and refit the chip. In some cases the chips are a one time use and can not be re-flashed, in which we would flash and fit a new chip.
Chip tuning is more commonly needed for older ECUs