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beepbeep beepbeep is offline
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Join Date: Jun 2001
Location: Sweden
Posts: 5,567
If it follows RPM (not speed), is louder on throttle and gets quieter when engine heats up then you probably have exhaust leak on some cylinder.

Header/head flange is usual culprit (bolts break or strip out), worst case scenario is broken stud.
Thank you for your time,
Old 01-21-2014, 03:08 PM
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