Black or silver............a clean nitrous tune WILL discolor them at the first bend and make them dingy right there. It's GONNA happen, don't care who coats them, or what color they are
So will a blown application. Pic = ceramic coated in black. As for EGT's, I can tell you from experience that at 2000*, your rug catches on fire.
So will a blown application. Pic = ceramic coated in black. As for EGT's, I can tell you from experience that at 2000*, your rug catches on fire. 
