Hi everyone!
My Dad drives a MKV '05 GTI and bought a tuned ECU File from a Fileservice as the car has a downpipe with an aftermarket cat.
The only thing noticeable is a different pedal map and higher rev limiter, otherwise no noticeable power gain.
Can anyone have a look and possibly do a legit tune (for 100 Octane fuel)? Of course not for free
Cheers and take care!