[Keystone]

I'm running a 2015 B7 and when you floor it on the highway during acceleration the car loses power for a second then starts hard acceleration again. It will continue to do this through the pull and will sometimes go into limp mode. I had a cracked charge pipe on my 335 that caused limp mode but I can't seem to find that being a big problem on the N63. Any ideas before I let the dealership rape me?

Thanks