exhaust / header wrap, Pro / Con Options

[drive-ability]

I was thinking of ways to lower engine noise and maybe heat in the engine bay.
Opinions on the header / exhaust wrap?

[drive-ability]

I found a good article on header/exhaust warp, basically they said it will dust your headers what ever they are made of. Here is a sample of what happens to a set of headers over time. I think I will pass on the warping of the exhaust for now.



Try these actual test numbers:
Mild Steel (1010) uncoated header exposed to 1200º F. in normal air will have a weight loss percentage of roughly 25% with only 10 hours use at this temperature.

Stainless Steel (410) uncoated header will have roughly 8% weight loss in the same 10 hour period.

A coated mild steel header will have NO weight loss at temperatures up to 1200º F. In fact it will actually gain a bit of weight! Between 1300º F. and 1600º F. the coating will begin to show signs of mud cracking or like the look of lacquer checking. However, limited diffusion takes place between the coating and the substrate, producing a very thin film of iron aluminide, which continues to inhibit oxidation