Hi, looking for a bit of help/guidance with an APR stage 1 Golf R (MY2015, DSG, 22K, UK)
I bought both the ECU and TCU tune from APR Dealer and have tested for about 3K miles so far but haven’t really enjoyed like I thought I would.
Regarding the ECU upgrade the power isnt useable in a linear way as somewhere between 1/2 and 3/4 throttle the turbo doesn’t seem to know whether its engaged or not and seems to surge on and off - WOT is perfectly fine - The result is my driving style becomes all or nothing at the higher rev range
TCU tune is something I thought Id really enjoy and seemed great for the first day or 2 but appears to relearn/adjust itself. I find “D” wont sit comfortably in a gear around 30mph always wanting to jump to 3rd at 27mph and back to 4th 30mph - a typical city drive would see and unneccary amount of shifts between 3rd/4th gear constantly when tailing traffic. Individual mode seems to take the original DSG map but often (not always) shifts to second almost immediatly from setting off and ends up bogged down at 800rpm and makes slow moving traffic difficult.
Is any of this common or is there issues that can be resolved?
Dont really want to flash back to stock if I can mitigate some of this as the extra power and drivability in “S” is great
Car also failed it first MOT on emissions last week (2nd attempt took it after a good blast + fuel additive and still failed Lambda) if the car had been stock I would have taken in to VW as 1 month warranty left