I went to the factory this past spring for 3 days to do some test work on textile parts...I cannot vouch for how it works on intakes and such.. But I gotta tell you what.. I never saw so much Indy car stuff on the shelves in all my life.. They do every freeking thing you can think of. Inside ofHeaders, Intakes, heads.. anything with a hole in it they were squirting stuff through. Lots of Nascar stuff.. And the finish.. as the women say.. It was to die for.
I think if you want to get 10/tenths out of your stuff.. it would be worth it. But it may not be worth it for the street guy.
Heck.. they even did the inside of brake lines,
oil lines.