[BBIGG BLOCK 396]

I have not tried it but I have been told use a spray can of oven cleaner,spray on let set for approx "1" minute and wipe off.I know this works really good on aluminized exhaust pipes,but have not tried it on ceramic coated.You might try a little spot where it can't be seen easily or try it on an old header one of your buds probably has an old ceramic coated header laying around you can try it on.I had my stock exhaust manifolds jet hot coated and I clean them with hot soapy water.

Bobby