Rep Power: 0

I have my header all installed with the gasket now with only one flange bolt to the downpipe now. The other is on order from Honda. There is smoke that is rising from the header like after I got my exhaust done. Is thisnormal for a new header?

 
Rep Power: 308

I would think yes. . . like a new exhaust system, the header's metal finish inside is probably just reacting to the heat that it's never been subjected to until now. It should pass, very shortly.

 
Rep Power: 0

I figured the same thing but, this was my first header install. Aside from snapping a flange bolt it went good.

 
Rep Power: 0

yea, when i installed my header, it smoked for 20 mins or so, then it quit, you also might smell a odd smell for a few days, i did, just a heads up

 
Rep Power: 0

Thanks guys!

 
Rep Power: 0

Well maybe also since you only have the one bolt on there so far, the seal might not be so tight right now. Some of the exhaust gases might be leaking out there right now

 
Rep Power: 0

then id be worried, it shouldnt be smokin if theres a leak

 
Rep Power: 366

I've heard new exhaust systems do that for a bit, too. They've got to burn up some film that's on the metal... or something like that.

 
Rep Power: 0

when i got my headers/exhaust installed, i didnt notice any smoking at or around the engine bay.... but it does leave a rotten egg type smell that comes out of the exhaust with a new one.

 
Rep Power: 0

my header was painted a primer color, and it all burnned off, dunno why we did that, but wanyways, it smoked pretty bad for about 20 mins or so

 
Rep Power: 0

my header had fingerprints ALL OVER IT! then they burned into the metal....lazy bishes. USE SHOP TOWELS

 
Rep Power: 0

smoking is normal for the first few times you warm it up.

 
Rep Power: 0

Kamikaze's GREAT black powdercoat fades out after 2 hours of use with that header...bastards.