Dependent on circumstance – if a vehicle has just had a custom ecu remap completed, the standard file can be reprogrammed at any stage – free of charge. Certain ecu packages even give the user themselves the ability to return the tune in their vehicle ‘back to stock’ in a matter of minutes.
However, if the vehicle’s level of modification is a little more involved, there may be extra work required before a vehicle could be returned to a state of factory tune – for example – if a vehicle has been fitted with larger injectors, these would have to also be removed and replaced with the factory units before flashing the vehicle back to stock. Any and all of this is possible at all levels of modification, however the more heavily modified vehicles may require slightly more effort which may incur an extra charge.