So I got my car tuned a few months ago and love the tune, makes 510whp and it barely changed the shift patterns....that being said yesterday I manual shifted it to 3rd and hit it and it was probably the hardest pull I've felt the car do, then after coming out of the gym headed home it started shifting aggressively and when coming to a stop down shifting aggressively. Then it got to where it wouldn't shift into 5 or 6 even in manual mode. Took it to the dealer and they said what I expected...take the tune out of it. But I don't think it's the tune. For some reason at the dealer it didn't do it, then when I picked it up it started again (figures). I figure I'd wait for it to throw a check engine light again so they could pull the code next time. Any ideas?