Hey Guys,
My wife got a 2012 1.4T M6 Sonic. We had it approximately two days before i decided to play with it. Haha. I've done some reading on here about the E78 tuning methods and have taken a shot at turning it up a little. I'm having a strange issue and i haven't been able to find the cause.
Almost every time you run the car to redline, at 6,000rpm it noticeably noses over. You can see it actually loses 25-50 rpm for a moment when it does it. The boost starts to climb, the maf readings start to drop, and the car starts leaning out, it will knock if you stay in it as a result of high boost and a lean mixture, i'm sure.
Attached is a screenshot of the issue and the tune as it sits.