Thread: High Flow Cats
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      08-12-2026, 08:08 PM   #3
greentrbo95gst
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Drives: 21 M5 Comp
Join Date: Jan 2011
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Quote:
Originally Posted by GORDON.M3 View Post
means those PLM HFCs are doing a terrible job of scrubbing the exhaust gasses. I would replace them with something like a GESI. Or I know people who have used the OEM secondaries and weld them in place.
Is Gesi pretty good? I found a part number that may work. 50022.
The car sounds amazing, almost pissed at downshifts and I don't want to take away too much of it.
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