Thread: RPM Jump
View Single Post
Old 11-10-2008, 11:38 AM   #7
Bimmerguy82
Registered User
 
Join Date: Aug 2008
Location: PNW, City of Rain
Posts: 525
My Ride: 2004 ZHP 6 SPD
Quote:
Originally Posted by AntB View Post
I have a whistle under light acceleration, but I always attributed it to my K&N intake. Maybe it's a vacuum leak somewhere? Going to have my shop check everywhere anyway when I do Inspection 2, so I guess it can wait.
If I can remember correctly, the rpm jump and whistle noise could very well be a bad DISA valve.
__________________
BMWCCA member #407674
___________
-Joshua
ZHPMafia.com member

Ebay headers | 3.38 diff | 2.5" cat-less exhaust | K&N intake | AA stage 1 software | UUC stage 1 light flywheel and clutch | UUC Evo 3 ssk
Bimmerguy82 is offline   Reply With Quote