Ok so i come from big V8's and such, when your working with them the exhaust isisnt such a big deal, you either go get a flowmaster or borla or something or get custom madrel bent stuff from an exhaust shop. There both about the same 300 - 400 bucks just the mane thing is th non crimped bends, other then that its not such a big deal (i mean it is but not so much to get a brand name) custom bent = just as good as brand X, why wouldint some custom bent pipes and just a good brand muffler, RES, and CAT do ok on these 4 cyl engines? I just really cant think of one good reason to buy a 530$ cat back when for that or less i can get custom pipe what ever size i want and then just run a nice muffler cat and res? are there just no good universal mufflers or someting or are people just not fond of having to pic a universal muffler as apose to a whole kit. It just does not make sence to me. I mean i guess if you heard an exhaust that you just for sure wanted that sound/tone them by all means get it cause thats what you like but if you just really wanting to get the exhaust out then this should be a viable option right? i like the WS and RS*R type systems im sure i could build something like that with misc parts and the exhaust shop. Basicly Is there something your geting when you buy a name bran other then just the nam, i mean there is only so much R&D that can go in to exhaust pipping and im willing to bet its all been done and a good exhaust tech should be able to come to the same conclusion that the designer of some of these name brand exhausts have come to as far as bends where and what size pipping according to your set up, and even then thats more a choice for the driver going by his current set up and future plans.