Boost Problems
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Joined: Oct 2001
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Boost Problems
Need some advise. Since yesterday my car hasn't been boosting normally. My current setup is KO4, GIAC KO4 software.
Under normal conditions, it would spike 20-21 psi then gradually lessen as the rpm's rise.. Today it hits about 17psi then drastically drops down to around 7-10psi with the engine slightly stuttering. I thought maybe it was the ECU.. Tried my APR, same exact results, except lower psi (GIAC always pushed the turbo harder). I cleaned my MAF, still nothing. Did a compression test, everything looked fine. Looked for leaks, couldn't find any (although couldn't check very thoroughly because the sun was going down).
Is there any advise you can give me? What else should I be looking for?
Any information would be greatly appreciated.
Under normal conditions, it would spike 20-21 psi then gradually lessen as the rpm's rise.. Today it hits about 17psi then drastically drops down to around 7-10psi with the engine slightly stuttering. I thought maybe it was the ECU.. Tried my APR, same exact results, except lower psi (GIAC always pushed the turbo harder). I cleaned my MAF, still nothing. Did a compression test, everything looked fine. Looked for leaks, couldn't find any (although couldn't check very thoroughly because the sun was going down).
Is there any advise you can give me? What else should I be looking for?
Any information would be greatly appreciated.
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