Does the Unichip need to be serviced or retuned?
There is no need to readjust the Unichip unless the engine has been modified. It is nearly impossible for the Unichip data to change after the Unichip ECU has been programmed, causing the engine to be detuned. It is possible however for the fuel pressure to drop (if the fuel pump deteriorates) which would cause the engine to run a leaner air fuel ratio than normal. Other items such as fuel injectors and spark plugs will need servicing from time to time which will also change the state of engine tune.
