Why am i hitting 22lbs of boost still? - Chevy Cobalt SS Forum : Chevrolet Cobalt SS Forums
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post #1 of 3 (permalink) Old 10-10-2006, 01:27 PM Thread Starter
Join Date: May 2006
Posts: 379
Why am i hitting 22lbs of boost still?

Okay, with the modds in my sig, i am hitting 22lbs of boost at redline. I have taken it into the dealership (very nice guys there) and they have replaced both my "boost solenoid" and my actual boost gauge, yet i still have the problem.

My acceleration seems to be fine and i told them to check the cat but they said there instruments gave them no indication of a clogged catalytic converter.

The mechanic is stumped and when he called the GM techline or whatever, the operator said this and i quote "turbocharger's boost levels can fluctuate in south GA because of the humidty and low altitudes"..........

So apparently my car is turbocharged and is boosting 7 lbs higher than normal because of my location............IDIOTS

Anyway, i have grown tired of bugging the mechanics at the dealership and have decided to take measures into my own hands. I recently ordered the GMPP cat back exhaust sytem. The dealership will be installing it and i am going to ask him to "inspect the cat" whenever he is installing the exhaust.

So my question is, will the tech be able to determine anything by actually looking at the cat with no exhaust on, and if my cat is clogged-will the catback exhaust system help reduce my overboosting??

Thanks for any advice or suggestions ahead of time,

Landonelf is offline  
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post #2 of 3 (permalink) Old 10-10-2006, 09:19 PM
Join Date: Sep 2006
Posts: 81
when a cat clogs, it actually melts down, and pieces of it will fall out. it'll look like uh..honeycomb i guess, with some of it clogged. if you're not having a loss of power your cat is probably fine. you'd also get a cel and a P0420 code if the convertor was failing.
jeremie is offline  
post #3 of 3 (permalink) Old 10-10-2006, 10:13 PM
Join Date: Jan 2006
Posts: 478
sounds like a possible fucked MAP sensor.
06Black is offline  
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