Ceramic is quite effective, not sure on flow benefits though and I wouldn't use it inside an IC pipe in case it flakes.
I bought a bunch of the ACL Race series heat shield material and will fab up some shields to cover most of the hot pipes where possible.
I think as production tolerences improved along with cutter technology the gaskets didn't need to deform as much to fill voids and seal so they got thinner and thinner, the quench/squish is built into the head casting.
In that case you'd be a pioneer and either have to run a few probes and log the temps in the real world or maybe give it a hard pull on a dyno with the hood closed and shoot it with an IR Gun to see what's hotter.
Personally I'd coatNwrap it ;)
(reasoning here is the Rad discharge is going...
For mine there's only 1x cold pipe into the engine bay the rest are outside so can act as heatsinks if left uncoated.
Heat will always go from Hot>Cold so if a pipe is 50c in a 90c engine bay it will get hotter
If it's 50c in a 30c area outside the engine bay it will get cooler.
Not at all just to show where to place the stand under the reinforced sections of the car and NOT under the 1mm thick rails that will bend with a fat car on them. ;)
Duty cycle per gear is boost per gear but it's really important to get the gear judge settings right first. (doesn't work well with an auto due to the Converter slip)
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