08-10 SS Turbocharged General Discussion Discuss the 2008 - 2009 Chevy Cobalt SS Turbocharged. On sale since the second quarter of 2008.

20psi losing power

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Old Dec 19, 2010 | 02:16 PM
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From: Killeen,TX
20psi losing power

so i have a trifecta tune and when we sent the logs to vince he said my car should be at 26psi and it spikes at 20 so theres something wrong and he said maybe its where the MAF relocate adaptor was welded on it could be in the wrong direction or something, so time goes by and i finally get a CIA cold pipe with the MAF welded on in the right direction use the extension cable they provided me and bam still 20psi...i dont know wtf to do at this point but for some reason i am losing power and i dont understand why.
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Old Dec 19, 2010 | 02:17 PM
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is there a boost leak? check all the couplings.
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Old Dec 19, 2010 | 03:25 PM
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yea i did that last time and there we none but maybe i need to do it again.
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Old Dec 19, 2010 | 03:37 PM
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Term had his wastegate rod adjustment come loose and lost a lot of boost a while ago. Next time you are under the car, look at the rod from the WG actuator into the turbo, see if the locknut is still intact and tight.
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Old Dec 19, 2010 | 03:50 PM
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Just saying boost goes down in the cold. Mines a 24lb and I'm pushing 20lbs same power
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Old Dec 19, 2010 | 04:54 PM
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where would i find it?


yea mines been the same for 3 months now tho
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Old Dec 19, 2010 | 07:09 PM
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You literally can't miss it its a long metal rod coming off to the passenger side of your turbo if I remember correctly... It has been a bit since I have been under my car.
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Old Dec 19, 2010 | 09:37 PM
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ok ill look for it
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