Ok guys here's what's happening. As soom of you may have read in my other post, I took my car to the dealership to have the ignition switch replaced, it all went smoothly and I even got a free coolant sensor (which had gone bad) and a free turn signal bulb, so I thought I made out ok. However they also told me i needed to replace my belts, which is odd because i inspect them every couple weeks and they are fine, and get new rotors, which I agree with. Anyway, got my car back a few days ago and all was well untill today. I noticed at full throttle my supercharger 'surges' not at half throttle or anything only full throttle. No drop in rpms, which leads me to believe it might either be belt slip or the supercharger itself. When on the throttle all the way I can hear the supercharger surge almost like when you hit the rev limiter. It's happens very fast and as long as I hold WOT. Think my dealership screwed me over so I have to come back? What do you guys think is wrong? Thanks for the help.

EDIT: Forgot to mention, had no problems at all like this before I brought it to the dealership.

_________________

Change the belt and see what happens. They are not that expensive($20-$30) and easy to install.

_________________