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A930Rocket A930Rocket is offline
OFF THE BOOST PIPE NOW...
 
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Join Date: Oct 2003
Location: Mount Pleasant, South Carolina
Posts: 8,059
Sounds like what your hearing on your car is the wastegate opening. If stock, it has a small muffler attached in later model cars. Early cars were vented to the muffler.

Cars with EFI have a BOV that gives off a chirping sound during shifts.
Old 09-03-2010, 04:26 AM
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