Do you hear it with the window open? Mine is virtually unnoticeable at idle and inside the car, but step on the gas next to a fence or some bushes (for acoustic reflection) you can hear it pretty well.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth