Rs4 won't rev.

OK guys I need some input here. As I’m sure most of you know I’ve been having an issue with my car not going to redline. I have no idea what could be causing this issue. I have replaced every sensor that could potentially limit rpm. I re Flashed the car last night and no change.

The car shuts down at 7500 rpm and not the same way as when u hit the Rev limiter. There is no bounce it just shuts the fuel right off. Other than this issue the car runs amazing and pulls like a freight train. Shifting at 7500 I still ran 11s with wicked trap speeds so the car is performing.

My thoughts are now to the ecus themselves but before I go buy those expensive fucks I was wondering if anyone has ever heard of any car doing this. Or does anyone have an idea I haven’t thought of or something I should try?