1% is pretty consistent with what all the coating companies (Jet-Hot, HPC, Swain Tech) claim.
The one thing I'd like to see is a long term study to see how well those coatings hold up after multiple heat duty cycles.
At the very least I'd like to see a long term study on header coatings, such as Swain Tech's "White Lightning" coating.
Boroscope? What else are you using that thing for?
You used the Swain Tech White Lightning specifically, or another brand?
And how many miles have you accumulated on the coatings?
On your headers...
Is it available to us commoners? :biggrin: