Is your overpipe/front pipe making noise/leaking?
 

Wanted to see if I could compile some info for everyone. Did/does your exhaust setup rattle? And which header do you have? Or did you fix the noise issues, by tightening?

Stock manifold, Nameless over pipe/front pipe combo (with cat and resonator), and custom mid pipe...no leaks or rattles here.

Stock header (until my OFH comes in), Perrin Overpipe and Perrin 3 inch frontpipe, no rattles or leaks to report here

As a general statement most leak problem I have seen with aftermarket exhaust parts I have seen are either real crummy gaskets or people crushing the life out of the gasket.

I have a custom exhaust so I can't really contribute but I have no leaks or rattles and my systems uses good old 2 bolt flanges.