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

Boost Problem?

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Old Apr 17, 2008 | 11:46 PM
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Boost Problem?

All my car has is a catback and Im only boosting about 10psi? Any ideas of why that is?
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Old Apr 17, 2008 | 11:48 PM
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how many miles?
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Old Apr 17, 2008 | 11:51 PM
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about 28k
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Old Apr 17, 2008 | 11:52 PM
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and its just going to 10? nothing past that
'
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Old Apr 17, 2008 | 11:53 PM
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no it just sits at 10 and doesnt move
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Old Apr 17, 2008 | 11:56 PM
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wow, thats a problem, take it to the dealership.....i was thinking maybe it would creep up slowly
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Old Apr 17, 2008 | 11:58 PM
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yea thats what i thought it would do too but it didnt budge and i suppose im gonna have a hard time with them to get them to do warrenty work to it considering i have an exhaust?
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Old Apr 18, 2008 | 12:23 AM
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Mine is doing this too. Only up to 10 psi, but my car is completely stock. I'm confused too.
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Old Apr 18, 2008 | 12:25 AM
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From: akron, ohio
they say if it has low miles it takes time for them to break in but 28k isnt low
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Old Apr 18, 2008 | 12:55 AM
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Mine has 25.5k, so I don't think it's a break in issue either.
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Old Apr 18, 2008 | 12:57 AM
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YEAH THATS A PROBLEM
CHECK THE BOOST WIRE FROM YOUR SC
I BOOST UP 17psi
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Old Apr 18, 2008 | 02:08 AM
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From: sk
stock that's exactly where mine sat as well. Doesnt sound like a problem.
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Old Apr 18, 2008 | 02:12 AM
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before I got my stage 2 I was only boosting 10psi with a catback also. Not sure if theres a problem unless you are staged.
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Old Apr 18, 2008 | 02:16 AM
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in what gear?
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Old Apr 18, 2008 | 10:18 AM
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It sits at 10 in every gear
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Old Apr 18, 2008 | 10:21 AM
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elevation?
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Old Apr 18, 2008 | 10:25 AM
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its not broken. there have been a million threads about how crappy the stock boost gauge is. you're probably right on target for pressure, but the gauge isnt reading it correctly.

just check all the vaccuum lines you can find for leaks... if you dont find one, then there is nothing wrong.

if you start reading a higher boost level than 12 and you have no mods, thats a problem.. clogged catalytic converters will cause the meter to read 15+psi due to extra backpressure in the exhaust.
if you add a free flowing exhaust, its not uncommon to see a 1 psi drop. BUT, your blower isnt pushing any less air, its still doing the same job it was before.

Last edited by chevysalesman614; Apr 18, 2008 at 10:25 AM. Reason: Automerged Doublepost
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