xplayer325

I like the 3 inch exhaust even though I lose a little bit of low end power my high end is insane. so it compensates alot and once I do the 2.4 intake manifold swap I will be taking in even more air so it won't be too bad

XM15

Its not the loss of backpressure like someone said. Its the loss of exhaust velocity in the low rpms that does it. In the high rpms however, there is alot more exhaust gas coming out, so the larger exhaust helps there. With an n/a 2.2 though, I bet there is no gain between a 2.5" and a 3" in the high rpms and the 2.5" would have a better low end.

Then you will really have no low end acceleration, but to each his own. IMO you wouldn't be able to spin your engine fast enough to make that combo worth the low/mid end loss.

o3nisoaso3

agreed. if ur going for top end cam and tune it and maybe get a shorty header... i got one for sale if your not SAI

xplayer325

well I have 2006 if that isn't SAI and what kind of header is it

o3nisoaso3

SAI is secondary air injection. mostly 07 models but i think some newer 06's may have had it. there is a line that runs from header area to the intake (from what i heard)

https://www.cobaltss.net/forums/show...&highlight=SAI

this thread should help

i have the CA V1 header www.cobalt-addiction.com/performance
my for sale thread: https://www.cobaltss.net/forums/parts-66/cobalt-addiction-v1-header-fs-104921/

avenger09123

Cold Air Intake

xplayer325

I know this is a little off subject but will the stock ss spoiler fit the cobalt lt

umrdyldo

iTrader: (1)

Yes almost all exterior stuff will fit in some fashion.

Look in the 2.2 section under the Swappable Parts thread at the top of the page.