Quote:
Originally Posted by NL03Scooby
Is it not generated by boost being forced back towards the turbo when you shut the throttle off and have no dump/recirc valve to remove said air?
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You see the issue here Rob is i have a new OEM recirc valve fitted 
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Maintained by Hypertech and Mapped by Andy Forrest
1998 UK Turbo , 1998 Terzo , 1997 JDM Type R the money pit , 2004 black WRX STI Type UK , 2004 blue FSTI
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