: Which headers to get?



pmtom1
01-14-08, 08:25 AM
OK doing headers this week or next. Need some feedback.

How much louder will it get?
What kind of sound change?
Will I feel the power?
1 7/8 or 1 3/4....and why?
Anything beside Kooks?


05 LPE CAI, Corsa CB

thanks!

rand49er
01-14-08, 09:53 AM
Mine got a bit louder, but IMO it was due to the hi-flo cats, less so the headers.

Get a tune in order to "feel" the addtional 25-30 hp.

Unless you're going to go FI, stay with the 1-3/4".

B&B and Stainless Works also make headers, but you can get an easy, direct connection to the Corsa with the Kooks.

Are you doing the install? Watch out for the dipstick!

HushH
01-14-08, 10:07 AM
Mine got a bit louder, but IMO it was due to the hi-flo cats, less so the headers.

Get a tune in order to "feel" the addtional 25-30 hp.

Unless you're going to go FI, stay with the 1-3/4".

B&B and Stainless Works also make headers, but you can get an easy, direct connection to the Corsa with the Kooks.

Are you doing the install? Watch out for the dipstick!

:werd:

trukk
01-14-08, 12:18 PM
Mine got a bit louder, but IMO it was due to the hi-flo cats, less so the headers.

Get a tune in order to "feel" the addtional 25-30 hp.

Unless you're going to go FI, stay with the 1-3/4".

B&B and Stainless Works also make headers, but you can get an easy, direct connection to the Corsa with the Kooks.

Are you doing the install? Watch out for the dipstick!

Yup. I Had RT highflow cats on my car w/ corsa, then added headers w/ magnaflow cats. Sound wasn't much different, with the exception of WOT (which was quite a bit louder).

Another note on the sound. You will hear more 'engine' noise with the headers, as it doesn't mask as much as the cast iron manifold. Prepare to hear some 'ticking', it's the nature of the beast.

-Chris

BryanS
01-14-08, 05:54 PM
:halo:I am running a Maggie with Corsa and high flow cats, went with the 1 7/8 " kooks and love the sound.

peter simov
01-14-08, 06:26 PM
will 1 7/8 make u lose power with a stock ls2 with cai and cat back and tune.

trukk
01-14-08, 06:59 PM
will 1 7/8 make u lose power with a stock ls2 with cai and cat back and tune.

You will loose a lot of low end TQ. I did the same thing with a FAST90/90 on a stock 5.7.

It only makes sense if you are going to go BIG later on.

-Chris