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PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Exhaust TECH > Log Exhaust Manifold Tech
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Old 11-02-2022, 06:07 PM
KSZR KSZR is offline
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vs a crimp bent 2.25" you should drop a 1/2 second in the quarter mile. I don't think hogging out the end of the manifold flange will affect performance that much.
Awesome thanks! Any opinion on what the ram air manifolds would add to that?

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Old 11-02-2022, 06:58 PM
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Ccass Ccass is offline
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Awesome thanks! Any opinion on what the ram air manifolds would add to that?
maybe another 1/10-2/10 if they were port matched and polished? The big question is finding a pair. They are out of production now. The whole Pontiac industry has been out for a while. So they are really hard to find.

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Old 11-02-2022, 08:07 PM
KSZR KSZR is offline
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maybe another 1/10-2/10 if they were port matched and polished? The big question is finding a pair. They are out of production now. The whole Pontiac industry has been out for a while. So they are really hard to find.
OK didn't realize that. I guess makes the decision easier and can always upgrade if they become available (along with the different head pipes).

Which Pypes muffler, turbo pro 14" or 18"?

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Old 11-03-2022, 04:54 PM
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Which Pypes muffler, turbo pro 14" or 18"?
The longer the muffler, the quieter and flow wise, the longer is a little better.

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