Ok I just installed a Perrin cat Delete pipe on my car and I noticed after driving it about 10miles that when it Idles their is a hissing sound comming from the rear of the car it seems, I can't say for certain cause it is hard to pin down where its comming from exactly. I can't hear it when I'm sitting in the car only when I'm standing near the back of it on the drivers side, it also tends to go away if I move to the front of even to the passanger side. Whut is this? is their a leak in my exhaust system? I put the gaskets back in so I dout its them. But Its funny cause its not too loud and its a long hiss almost like if u punctured a tire but I know its not that cause it disapperase when the car turns off.
thanks for any help

 

yeah, there's a good chance that's an exhaust leak. you might wanna get back up under the car and retighten everything. if it still does it. it might be the gasket. just double check everything. then if it still does. run the car off a cliff cause it's ruined. hahahaha j/k. you might wanna take it to a respectible car shop. good luck.

-Chad-

 

tighten them bolts up good.

 

If there's a leak you may be able to feel it w/ your hands. Have the car jacked up and with the car idling put your hands around the flanges of the testpipe. You should feel air if there is a leak. If the car is warmed up be careful with your hands, better to do it with the car cold.