I recently removed the resonator pipe and had a muffler shop fabricate a 3" pipe to replace it. About a day after the installation i started hearing squeeking sounds coming from under the car.
Whenever i step on the gas while realesing the clutch, it would make the sound. It also squeeked while going over rough roads. I also installed a HKS catless DP about 2 weeks prior to removing the resonator. Everything was fine during that time. I read somewhere that when installing an exhaust system, I need to use some kind of grease. I didn't use anything so I'm not sure if that's what's causing the squeek. I've posted a thread similar to this in the Factory Turbo forum, but didn't get any advise. I wanted to bring my car to the dealership but i'm running on 1 cat, so i'm not sure if that'll get me into trouble. If anyone has any ideas of what it might be or if anyone had a similar problem, please let me know. Any response would be greatly appreciated. Thank you.
-Victor

 

Stock muffler?

 

yes stock muffler

 

Update: Looked under the car and found out that the screw that connects the downpipe latch w/ the latch on the car came off. Screwed in another screw and the it was ALL GOOD.

 

sweet! i bet your happy as hell

-Gagan