2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

bad boost need help

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Old 07-24-2009, 12:11 AM
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bad boost need help

I have a 06/sc with gm stage 2 cai, catback. All i see is about 10 psi, i did the bypass mod and hit 12.5 tops. So im thinking bad bypass maybe belt slip 50,000 miles, my iat 2 are 138-145 and 5600 elevation maybe thats why im unable to hit the 15 i suppose to. Or could there be any reason why boost so low.

bump?

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Old 07-24-2009, 12:15 AM
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my only guesses would be belt slip and the thin air could possibly cause that..less pressure.. less psi doesnt mean less power neccesarily

does it feel strong or does it feel like it should have more??

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Old 07-24-2009, 01:00 AM
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feels strong but got 2 more psi with mod so replace bypass i figure
Old 07-24-2009, 01:05 AM
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Theoretically you shouldn't see a drop in charge pressure when you have lower outside pressure. The real world includes inefficiencies, but I'd still rule out altitude.
Old 07-24-2009, 01:25 AM
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So we going with 140 iat2 and bypass. Cause I did see 2 psi with mod, and lower iat crame a little more boost.
Old 07-24-2009, 08:31 AM
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Originally Posted by 06_SIC_SS
my only guesses would be belt slip and the thin air could possibly cause that..less pressure.. less psi doesnt mean less power neccesarily

does it feel strong or does it feel like it should have more??
It shouldnt be belt slip if he used the gm stage 2 belt. That belt fits snug as hell with the stage 2 pulley. Altitude can deff play a part in the lower boost, but 10 psi is very low for a stage 2 car even at high altitude.
Old 07-24-2009, 12:24 PM
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So any ideas
Old 07-24-2009, 12:33 PM
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bad gauge?
Old 07-24-2009, 12:39 PM
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intercooler pump working?
Old 07-24-2009, 12:43 PM
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those iat2 temps right after you do a pull or before?
Old 07-24-2009, 01:00 PM
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If it was belt slip you would know. when i had my SC belt slip would happen and throw me forward in my seat. Maybe bad gauge, vacuum line pinched/collapsed, gasket leak, improper tune.
Old 07-24-2009, 05:22 PM
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pump working, before pull its 100 hear at like 6 at night so hot hot. Im doing fuel filter new plugs header dp heat exchanger new bypass. See how it is after that
Old 07-26-2009, 02:50 AM
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I have a 2006 ss/sc and I'm having bad ass boost problems. I 'm running stock and I bought her used, and I'm only pushing 2.5 psi. Any suggestions?
Old 07-26-2009, 04:09 AM
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wopw
Old 07-26-2009, 11:49 AM
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Originally Posted by BLACK/-\SS/SC
I have a 2006 ss/sc and I'm having bad ass boost problems. I 'm running stock and I bought her used, and I'm only pushing 2.5 psi. Any suggestions?
Why would you buy a car that is that obviously messed up?
Old 07-26-2009, 12:17 PM
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Durty, what kinda tune are you running? If custom, make sure tq management isn't on.
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