I am running cobb ap stage 1 for a couple of days now. last night my buddy was driving the car and the car kind of hiccuped and threw the check engine light, traction control light, and cruise blinker. The car ran fine afterwards, no pinging or knocking. My ap said the code was wastegate seloniod, something or other, and i reset it. I searched the threads about boost creep and overboost, and it sounds alot like those problems, but i am still running stock exhaust and everything. Same probem from 06-07 stage 2? Any ideas?