Quote Originally Posted by VIPERGUY
they have high temp powders (1000F sustained)

although the finishes are pretty crappy, and they do not hold up to abuse/water/mud/dirt/coolant as well as ceramic

My EGT's get in the upwards of 1700*F at WOT and around 1350*F on the interstate.

Either way, I would not recommend powdercoating anything exhaust related. And I don't even like heat wrap although I do use it on my own car. I would suggest Ceramic Coating!