new headers & tune ? running rich at idle

[skar]

I had kooks long tubes installed with off road y-pipe and a ls6 intake with dyno tune. At idle I can see some smoke coming out of the exhaust.
Not a lot and I do not see it driving. Do I have a rich idle tune or is this normal with out cats.

[nhraformula]

i have never noticed smoke.
i do smell the fumes from time to time though.
alot of smoke or alittle and what color is it?

its nothing you should worry about

[Flobeast385]

After i installed my LTs i did notice a little more "smoke" coming from the pipes but it is actually just raw exhaust. The converters burn up most of the raw exhaust t o keep the emission levels low coming out of the tailpipe. Also the new headers and pipes will have residue on them from the factory and will take a while to burn off.

[skar]

Only a small amount of smoke ? light gray I think. Car seems to run ok. 303hp to 336 on mustang dyno after install and tune.

[nhraformula]

im betting its raw exhaust.
if you didnt see any before headers, thats what it is.