My build thread has a recording of my FSWERKs exhaust. I think it sounds as good as, if not better than the Cobb, the build quality is equal, same raw materials used in both cases. Only difference is the flange VS the overlapping tubes. Installation of either exhaust involves proper alignment with loose fits (partially tightened bolts). I use silicone lube to make sure the hangers can be easily installed. I start from the muffler and, and place a folded rag between the exhaust tip and the body, to locate it and center it. Then I start clamping from the downpipe, towards the muffler. After about a week, check your fasteners for looseness, and retighten, if necessary. The pipes will smoke due to lubricants used during forming, nothing to worry about. I wiped my exterior surfaces down with solvent to allow the nice purple patina to form, without fingerprint discoloration.