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Jul 22, 2008 | 01:51 PM

COBALT (BLACK/LT)

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From: PA

Header Hp

how much hp will the GMP headers give the cobalt 2.2?

Jul 22, 2008 | 01:54 PM

teh_punk

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From: Palm Springs

500whp

Jul 22, 2008 | 02:02 PM

COBALT (BLACK/LT)

Thread Starter

New Member

Joined: 04-05-07

Posts: 29

Likes: 0

From: PA

no seriously i want to know. can someone help

Jul 22, 2008 | 02:21 PM

teh_punk

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From: Palm Springs

every car is different, put it on and take it to a dyno. im guessing anywhere from 3-10whp..10 if you have a factory freak. if you throw on an electric supercharger you'll get an extra 20-30 rWhp. search next time.

Jul 22, 2008 | 02:31 PM

Jn2

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From: Texas

gmpp header does almost nothin for this car..improves airflow what? 7%, thats a joke for the price, go get yourself a real header, not a exhaust manifold