I have a 98 ek coupe with aftermarket exhaust 2 1/2 to 4in. Stock exhaust hangers. Cant get it to stop rattling.. Cant find a shorter hanger wondering if a longer hanger might be a better choice? Just looking for some opinions or if someones had this issue what you did to fix it. Thanksss
First things first, why the hell do you have 4" exhaust piping? That's standard on most TRUCKS
Second, and someone correct me here if I'm wrong, 4" exhaust on a car will rob it of some of the back pressure required for it to run properly.
Your 4" pipe is probably sitting on something under the car, causing the rattle. Does it rattle when idle, or when you hit bumps in the road? Also, there are rubber bushings of sorts specifically for hanging pipe. Check to make sure they are there. Also, make sure your muffler isn't contacting your rear bumper.