Quote: Can damage to the coatings be caused just during idling? How long does it take to do permanent damage if too rich/lean?
You can damage bright headers in less than a minute if fuel or timing are off far enough.....
That will actually burn it turning it darker & making it feel like 320 grit sandpaper The peeling on the flange if not discolored is poor prep
I think the reason is the company did not first do the sliver coat as they promised. If you wipe away the top coating of black cermaic you can see the bare metal below.
I had them do the rest of the exhaust system in the same black ceramic coating and it is holding up perfectly. Only the areas close to the heads are falling off.
