Has anyone tried this (or any other ceramic coating) on the stock exhaust manifold? How about the exhaust system itself?

Here's another question...Anyone try having the intake manifold extrude honed for smoother airflow?

 

Ceramic coating the exhaust housing and manifold would be a great thing, no doubt about that.

Extrude honing the intake would be a complete waste of time. The rough surface of the intake does not hinder airflow, since aiflow through ports exhibits boundary layer flow. Thus small bumps and imperfections near the surface do not effect the flow.


KP

 

i had my turbo exhaust housing, headers and downpipe jet hot coated on my 87 buick gn. it looks good it it makes any other true differnce i could tell ya. but it looks alot better.