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Discussion Starter · #1 ·
i Just had my car in service for a rattleing under full boost. They determined that it was the boos guage and replaced that and the turbo and exhaust manifold gaskets. now my car goes to 28lbs of vaccum is that normal? it used to idle at 18lbs of vaccum and now it spkies 17 and slowly tapers off to redline. it never used to do that before? what does a stoc srt 4 normaly have for vaccum? any help or replies would be great. thanks!
 

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18-21 stock, 28 does not sound normal at all
 

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if you had loose lines you would see less vacuum not more I believe
 

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Spike

Wel i have a stock 04Srt my car only hit 15psi the most and I seen ppl wit stock Srt spike 17psi? Y can't i make it to 17psi the most i go is 15psi i kno srt come with 12-13lbs stock is there something wrong?
 

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Discussion Starter · #8 ·
well mine idles at 20-21 vaccum and it boosts to 17 psi spike. between shifts it goes to 24 vaccum and in decel in a gear it goes between 22 and 28.
 
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