So I've had my mk6 GTI for about half a year and I've never had any problems with it until today. The previous owner had clearly done work to the car in terms of adding hardware. K04 turbo, upgraded intercooler, unitronic intake system, etc. The only thing that bugged me was that it was running the stock tune so I thought I'd take it into the shop to get a stage 2+ tune to really wake it up. Before the tune, I never had any problems. Later the shop called me saying the flash was done and that they even got one good pull in during the test drive. The only concern was that it started misfiring because "the spark plugs were done for." So after I picked up the car, I replaced all the plugs as suggested by the tuning shop. But my car still stutters on acceleration and idle and I'm getting a lot more turbo flutter than I did before the tune. I scanned the car and it spat out a generic P0236 error code about the boost pressure sensor.
Is the boost pressure sensor the actual problem or is there something else causing the engine to run as rough as it is? I definitely don't think it's the spark plugs since they're brand new. This never happened before the tune...
Is the boost pressure sensor the actual problem or is there something else causing the engine to run as rough as it is? I definitely don't think it's the spark plugs since they're brand new. This never happened before the tune...