Originally posted by Thinkmoto:
Originally posted by Derk2000:
Originally posted by JonnySVT:
Isn't the ceramic coating supposed to act more as a heat trapper instead of a heat blocker



The ceramic coating is a heat barrier.

The inside coating on a header keeps the header from receiving the full temperature of the exhaust gases, also keeps velocity up.

The "insulating" effect of the coating also increases the lifespan of the headers by reducing the peak temperatures they "see".

The coating on the outside of the headers keeps the engine bay cooler.