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      05-31-2023, 08:02 PM   #3
nestyle
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Drives: e46 m3 ILB Slicktop ZCP
Join Date: May 2021
Location: N/A

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Quote:
Originally Posted by Jbonly21 View Post
It looks great, did you use new OEM gasket? With the car running, get some brake cleaner and spray where the headers are mounted to the head, if there’s any changes in the idle, you found your problem.
Thank you for the help, don’t see any signs of a leak around the gaskets there. Didn’t use oem gaskets, but ones that had slightly larger diameter to fit the slightly wider primaries on these headers. Bumping this as I’m still running into the same issue. Tried switching the o2 sensor positions and the car runs slightly better at idle but starts misfiring and cutting power under load
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