I installed 5" exhaust a couple months ago. The mileage is great, and it sounds awesome. I have a concern that might make me put the stock exhaust back on. When I turn left, I hear what sounds like a rubbing sound from the right front of the engine compartment. Has anyone else ran into this and do you know what it is?

 

It is likely that the one or more clamps came loose. Take a look and make sure that all the pipes are very fully seated in the expanded section of the adjacent tube. You may need to look at replacing a clamp or two along the way.

 

Everything is tight, I'm not sure what the problem is, but I'm pretty sure I'm going back to stock exhaust. Thank you for the advice though.