There's a more technical reason too. The coating retains the heat inside the header. The o2 sensor being so far back, as oppose to 6 inches from the head with the manifolds on, will read somewhat lean if they aren't hot enough. The coating keeps them nice and hot so you get an accurate reading. Keeps the fuel mileage up and makes the headers show a much better gain from not running overly rich.

In your situation, you might want to get the Y-pipe as well.

 

Are you looking for headers for the truck in your sig? If so I don't think the Pacesetters will work on a 4x4 at least from what I've read here. I keep looking here hoping to someday see a post saying that Pacesetter has made a LT for the 4x4's that don't cost $$$$

 

i just saw that... sucks that ther eis no budget header for 4x4's

the togs and ASM's look sweet, but they are big bucks

 

you can say that again Im really tempted to be a guinea pig on this and if they dont work Ill make em. Just dont know about reheating and bending coated pipes

 

The Thorleys fit 4x4's!!! And they are reasonably priced. Coated and un-coated.

 

I havent heard much about them what sort of gains are people seeing the tubes look alot shorter because of the tri y design almost like midlength. hhhmmmmm

 

i saw those in summit.. pretty nice price also. But I didnt know if anyone had tried them on the newer GM trucks yet

 

will they fit on a 6.0???

where do you find these thorleys at?