question for those with gmpp exhaust manifold on 2.4
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Joined: 05-16-06
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From: NS, Canada
question for those with gmpp exhaust manifold on 2.4
I tried searching but cant find an answer to my question. Can you notice a difference at part throttle below 3000rpm with the gmpp extrude honed exhaust manifold? thanks
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Joined: 03-09-06
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From: Orlando, FL
Not sure about the RPM range difference but I have heard the GMPP exhaust manifold can give increases of up to 10hp and with the GMPP exhaust (sport or touring) with a tune can give numbers of up to 20hp gains, but I have seen no dyno slips so not 100% positive. Hope this helps if not try and contact GM yourself.
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