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What's the mileage, when was the last time you changed the plugs, when was the last time you cleaned the throttle body?
 

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Discussion Starter #3
57k everything hasnt been touched in her. Its weird cuz it rarely does it. Only started doing it after the intake was installed on it. The rpms just bounce between like 500-1600 rpm.
 

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Sounds like an intake leak. Check and make sure it is well sealed.
 

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All air going into the plenum has to be metered by the MAF or the ECM will be screwed up.
 
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