O.E supercharger not enough boost? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-29-2008, 06:33 PM   #1
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Default O.E supercharger not enough boost?

I heard O.E setups should run around 8 psi? well looking at my gauge it seems to be around the 6 mark. just below the middle point of 0 and 10. It doesnt seem to have any running problems or noise. but it is pretty quiet. i can barely hear the whine. just wondering is the bonne is the same as the GTPs or do they have a lower boost from the factory?

thanks in advanced.

mike
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Old 07-25-2008, 10:03 PM   #2
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From all that I can gather, should be pretty much the same as the GP. I will be upgrading to smaller pulley here soon hopefully, so should be closer to 10PSI once I get that done.

Jon
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Old 07-26-2008, 12:37 AM   #3
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6 or 7 is about right for stock. If you have a air box you will here very little if any whine. Gutting the box or installing a CAI or FWI will give you the whine. Getting to 10psi will need some upgrades. What have you done, or plan to do. I don't suggest going below a 3.5" pulley unless you can scan for KR.
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Old 08-19-2008, 06:30 PM   #4
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the gauge is not 100% accurate too fwiw...
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