OK - I'm taking plunge for new exhaust. Though my gutted set-up has advantages, I do want to be more legit with emissions coming out of my pipes, so I'm going for downpipes with free-flow cats. Green and mean. So one, that much is decided. (may actually see improved performance since gutted stocks still require full stock zone to fill up and then be evacuated)
Also going with 2.5" cat-backs. That's two.
Now the issues. I'm figuring turbos make x-pipe superfluous. Must be some reason all engineers of all aftermarket don't include them. So planning to go for least restrictions, no x-pipe (three). Use 4" round (18"L) Magnaflow resonators, then to 5"x8"x18" oval Magnaflow mufflers. Pretty much Endee's set-up without the x. Far less expensive than any APR, Millitek, etc. Hardware (except tubes/pipes) is about $400 delivered.
Final issue is #4 -- whether to keep stealth of 2000 C5 (downturned pipes and solid valence) or to come thru the valence (as is done with 2002+). If the latter, go with 3" round tips or, say, 3.5x4 ovals? Right now I'm thinking to save close to a couple hundred $ to mod valence, go with downturns (a tad quieter at cruising) -- and can always change tips and valence later. But I've changed preference a couple times so far. All advice welcomed!
wofman
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