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boost gage problum?

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Old 01-29-2006, 05:00 PM
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boost gage problum?

i just installed my new BilletFlow pulley its a 2.9 so it schould make around 16-17lbs of boost BUT this is were the problum is....

every thing works great and the gage tells me i'm makein the boost i wanted but at the top end of the RPM's the gages drops off twards 12psi or so...like stock levels!!!

WHAT GIVES!!!!!!!!!!!!!!!

is my boost gage broke?
Old 01-29-2006, 05:06 PM
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Nope, your gage is working properly. Your Bypass Valve is opening up and bleeding off the extra built pressure. You need to do the Boost Bypass Mod.
Old 01-29-2006, 05:09 PM
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yeah, boost bypass, idk if you will see 16-17lbs tho, try 15....MAYBE 16...in FL with a 2.9 you will see 15-maybe 16 so...

Yeah it should build boost quicker, then hit almost 15 then drop back down to 12 near redline, wit the boost bypass mod, you will hold full boost all the way to redline, let me take a pic for you man, brb
Old 01-29-2006, 05:19 PM
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Originally Posted by silverSS
yeah, boost bypass, idk if you will see 16-17lbs tho, try 15....MAYBE 16...in FL with a 2.9 you will see 15-maybe 16 so...

Yeah it should build boost quicker, then hit almost 15 then drop back down to 12 near redline, wit the boost bypass mod, you will hold full boost all the way to redline, let me take a pic for you man, brb

EXCELENT!!! A PIC!!!

btw the TECH2 was showing 16.7lbs of boost on it....its pretty dam accuerit....its cold as **** up here so nice dence air
Old 01-29-2006, 05:34 PM
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https://www.cobaltss.net/forums/show...044#post159044

Here you go man, i figured id make a how to, since there was not one
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