I am having a ceramic coating put on the pipes of by 2007 1200 RT. We dont think the ceramic coating will damage the guts of the catalytic concerter - but if it did, what would it hurt? There isnt an o2 Sensor past the cat, so the computer wouldn't know if its working or not. I guess it could get stopped up... Can anyone tell me if there is an adverse effect if the cat goes bad?