i have an 09 ss tc and i have only put on a hahn cai and hahn full catback exhaust, and the last month or so I have no boost in firstgear. What do i do? My dealer says i have to pay 100$ to get it ran on a diagnostic machine and if it was caused from either they probably won't touch it. SO i was wondering of what peoples thoughts are, and if you think it could be caused by either aftermarket part. I do not think so but they may try to tell me it is and I want to be prepared.