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03-13-2018, 02:22 PM | #1 |
New Member
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Rep 5
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Let's play... help diagnose this sound !
Looking for advise on this noise:
2011 E92M3 w. 70k kms. Runs like a champ - no cels or faults. Mods incl. Dinan stage 1 flash + Dinan cf intake + Dinan cat back exhaust (stock cats) - happens only when car is warmed up/hot - does NOT happen after cold start cycle finishes - its clearly exhaust related - more noticeable on drivers side Is one of the secondary air pump valves flaky? (possible) Header gasket leak? (unlikely) Checked the header to cat bolts and tightened (so not that) Would a "cold start delete" flash fix this? What about removing secondary air valves/air pump.. and put in a blanking kit? ITS DRIVING ME CRAZY! |
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