Same thing happened to me!!!! Its the tune. Trust me get a different tune. Y it does it have no idea some cars are just different. I had tunes from two different shops and they couldn't figure it out. I got like 5-6 revisions from both shops an nothing. Car ran great but couldn't shift after 7000 if I did I would get the noise and cut in power. I'm not gonna turn this into an AED is the best thread that is not my intention but as soon as I got a tune from Shaun everything ran perfect. Consider it, if u want give him a call I'm sure he'll explain y it's doing that. It's all in the tune man!!!!