Jimmys2007CobaltSS/C

iTrader: (1)

get eh hahn 3 inch catback`

Dayta

iTrader: (1)

after the exhaust, im gettin a duel pass and HE, i want to really cool her down

CobaltSS 16

iTrader: (3)

I would get 1.75" primaries and a 3" downpipe with your setup

Dayta

iTrader: (1)

you think that would be the best?

how about this?
1 3/4 inch high temp paint, 'w/ cat', 304 stainless downpipe, 3" DP 2.5" bolt-in downpipe, bolt in, Add extra O2 bung for wideband

CobaltSS 16

iTrader: (3)

Yea I would go with that, and get a 2.5" cat back. That's the setup I'm going with (except all S.S.)

It's up to you though, but you will be making more power with the that setup then what you originally were getting.

rockSTAR_SS

iTrader: (4)

After this exhaust, I'll be working on getting an ls4 throttle body, the RAW 3 in intake, and the RAW stage 2 maybe... Oh yeah, and the exedy hypersingle clutch and lightweight flywheel... I'll run that set up til I get the twin screw...

But yea, 1.75 primaries and a 3" dp will be perfect. Except I'm gonna go ahead and get the 3" exhaust as well to save from having to buy it later on at full price when I get the twin screw. Hopefully it won't hurt me too bad til then. The RAW stage 2 should produce enough exhaust to keep from having too much back pressure...

Dayta

iTrader: (1)

im gonna go with the 1.75 and 3"dp to 2.5bolt
im not gonna need anything bigger than a 2.5 exit

you'll be fine with the 3", you might feel a little less pickup in low rpms but nothing much

rockSTAR_SS

iTrader: (4)

Aight good... I'd like to go 2.5" cat back but I can't miss out on a deal like this one lol 3" stainless for $435... Killer deal. My goal is 300-330 hp so I'm sure it'll be fine..