Car Blowing Brown Dust/smoke

[JImports]

hey guys,

for the last few days my car GTR32 has been blowing a lot of brown smoke when it hits boost. The more boost the more smoke.

It has a pfc (tuned from Japan and I haven't touch anything mods wise) and running 1bar.

I check the turbos and both are dry so no blowby.

Can anyone tell me what could be wrong with my car?

i'm using martini 0w/40 if that important.

Thnks in advance.

Cheers,

Thuy

[skylinecouple]

Nothing to worry about as it is just unburnt fuel in the exhaust. This just builds up while your cruising around and is a mixture of soot and fuel. Once you boost up a few times it will reduce. I really hope your not thrashing your car with a PFC tuned in Japan, they usually run a lot more timing than we do. Put it on the dyno, I here rebuilds are expensive.

[JImports]

will take your advice and have it tune here.

thanks for the headsup

[tridentt150v]

Only other thing I'd check is your spark plugs, make sure they are the right ones esp. heat range etc this can affect the amount of build up, but otherwise I agree with Skylinecouple