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

2.79 pulley only 16psi help

Old Jul 27, 2008 | 06:56 PM
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Question 2.79 pulley only 16psi help

i have a 2.79 pulley and i only hit max 16 psi i have a header and high flow cat and all the other modds in my sig but why am i only hitting 16psi anything would be help full meth is not hooked up
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Old Jul 27, 2008 | 06:57 PM
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its fine
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Old Jul 27, 2008 | 06:58 PM
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I get 14 psi on a 2.8

boost doesnt equal power.
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Old Jul 27, 2008 | 07:00 PM
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thats 100% completely normal.... factor this in -.5psi for every 1000ft
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Old Jul 27, 2008 | 07:00 PM
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Originally Posted by an0malous
I get 14 psi on a 2.8

boost doesnt equal power.
i kno boost doesnt equal power but i hear every 1 else running 17 to 18 psi
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Old Jul 27, 2008 | 07:03 PM
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whats your altitude?

no 2.7's get that... not 2.8's

you have full exhuast thats a loss of 1 psi right there plus altitude... stop worrying your cars fine

Last edited by hungryhip-ccp; Jul 27, 2008 at 07:03 PM. Reason: Automerged Doublepost
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Old Jul 27, 2008 | 07:04 PM
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Originally Posted by cobaltz51r
i kno boost doesnt equal power but i hear every 1 else running 17 to 18 psi
who cares.
they probably just have restrictions to flow causing higher boost.

having good exhaust work will drop your boost, and make more power with it.
which is a GOOD thing. not a bad thing.
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Old Jul 27, 2008 | 07:04 PM
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Originally Posted by hungryhip-ccp
whats your altitude?

no 2.7's get that... not 2.8's

you have full exhuast thats a loss of 1 psi right there plus altitude... stop worrying your cars fine
1000 ft above
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Old Jul 27, 2008 | 07:07 PM
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so exhaust and altitude your losing approx 1.5psi.... nothing to worry about your cars proly pretty fast, just not as fast as mine lol just f-in with ya

heres an example im at 2200ft with full 3" catless exhaust and 2.7 and i see a max of 17 but normally 16-16.5

Last edited by hungryhip-ccp; Jul 27, 2008 at 07:07 PM. Reason: Automerged Doublepost
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Old Jul 27, 2008 | 07:07 PM
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Originally Posted by hungryhip-ccp
so exhaust and altitude your losing approx 1.5psi.... nothing to worry about your cars proly pretty fast, just not as fast as mine lol just f-in with ya
hahaha yeah im going to get dyno tuned next tuesday just to make sure
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Old Jul 27, 2008 | 07:09 PM
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and ive ran a lowest of 13.2 so boost doesent equall power my friend... moving air does...

i added a example to my post ^^^ look above

Last edited by hungryhip-ccp; Jul 27, 2008 at 07:09 PM. Reason: Automerged Doublepost
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Old Jul 27, 2008 | 08:14 PM
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I had 15 on a 2.9 .. Normal
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Old Jul 28, 2008 | 07:31 PM
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...this makes me wonder wtf is with mine,lol, I'm from canada so it reads in kpa, but I'm reading 105-110kpa, which is about 15.5lbs of boost, on just a stage 2 pulley. I'm a sea level though, maybe 30ft elevation,lol (this is in Moncton, New Brunswick) I'm not complaining,lol, I'm just wondering how thats possible if another guy is running 16psi on a 2.79 when stage 2 is what 3.09? Does that mean my gauge is very innacurate beacuse its the stock one? (local guy tried to tell me stock one is ****, I told him I didnt know if it was or wasnt so i wasnt gonna argue)
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Old Jul 28, 2008 | 07:42 PM
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mine runs like 17.5 with the 2.8 at 7200RPMs
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Old Jul 28, 2008 | 09:51 PM
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im gettin 17.5 with a 2.7, your fine
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Old Jul 29, 2008 | 03:38 AM
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Originally Posted by MidnightNB
...this makes me wonder wtf is with mine,lol, I'm from canada so it reads in kpa, but I'm reading 105-110kpa, which is about 15.5lbs of boost, on just a stage 2 pulley. I'm a sea level though, maybe 30ft elevation,lol (this is in Moncton, New Brunswick) I'm not complaining,lol, I'm just wondering how thats possible if another guy is running 16psi on a 2.79 when stage 2 is what 3.09? Does that mean my gauge is very innacurate beacuse its the stock one? (local guy tried to tell me stock one is ****, I told him I didnt know if it was or wasnt so i wasnt gonna argue)


well i see 16 on 2.7 at 2200ft and at my girls house where it sea level i see 18.5 almost 19 so ide say the altutude makes a huge difference in boost and power...
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Old Jul 29, 2008 | 11:34 AM
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Originally Posted by an0malous
I get 14 psi on a 2.8

boost doesnt equal power.
QFT /thread
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Old Jul 29, 2008 | 11:38 AM
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I only get 15 on a 2.79, I am at 3000ft.
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