GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

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

Berettaspeed 06-29-2008 05:33 PM

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.


juniorcruzer 07-25-2008 09:03 PM

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.


Danthurs 07-25-2008 11:37 PM

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.

iluvmybonnie 08-19-2008 05:30 PM

the gauge is not 100% accurate too fwiw...

All times are GMT -4. The time now is 04:50 PM.