Is it really worth it. If I do it I will do manifolds, uppipes collector and the turbo. It would be nice if it helped spool up does it really make much of a difference. But the main thing that I am wanting is the reduction in underhood temps. If I pop the hood after driving I can't touch nothing for aat least a half hour with it burning, well not burning, but very uncomfortable you know what I mean. And do they just coat the outsides of everything or do they do everything inside and out.
If you only chose to coat one or the other, you would only coat the inside, not the outside.
They use all kinds of tricky chit to coat the insides. Let it run down, run the nozzle way down in the port/tube. A company local to me coated the insides of my manifolds (insides only) to keep the heat out of the actual manifold material and save them from warping, expanding, shearing bolts and cracking like they were.
So far I've swapped out the driver's side with the internally coated one. After driving for a couple weeks it still doesn't look like it's been run yet from the outside
There is just no heat coming through now.
I have read data about some testing done on an engine producing around 1530 degrees egt. With a laser Thermo, the thing recorded header temps of 930 degrees on the surface and 200 degrees radiant heat uncoated.
Coated inside and out radiant heat dropped to 80 degrees. That's pretty amazing.