Alright, y'all, this thread has been dead for a bit, but Dinan sent me the tuner. I may chicken out. I'm really nervous to be their beta tester. They've been really cool to me though. If I tap out of this, is there anyone in the Atlanta area that's interested? I can pass on the tuner and put you in contact with the Dinan engineer. I know, I know... it's just this is the first new car I've had since 2004 and I'm not sure I want to risk it. Though, if this is truly the same motor as the GLA, then there shouldn't been an issue. Plus, it sounds like, worst case scenario, the ECU will through a warning that the tuner is too aggressive and put the car in safe mode.