Gtr Blowing Smoke

[Rav]

Hi Guys,

I have a R32 GTR and on boost black smoke comes out the exaust,

I see this happing alot to GTR's, Why is this and how bad is it?

[Tomek]

if it's only coming out on boost then it's mostly likely running rich, which isn't really a problem.

Get yourself a new tune to sort it out, you'll probably gain a few kw's too

[Duncan]

what colour is the smoke? black? white? brownish?

when do you notice it? all the time? when you back off the throttle? when you get on the throttle at high boost? when its cold?

[MrStabby]

what colour is the smoke? black? white? brownish?

Into the beers tonight? He said;

black smoke comes out the exhaust

Black smoke = rich mixtures, which is normal when the boost is turned up with the standard engine management. it wont cause any problems other than wasting fuel and limiting power. So, turn the boost down (ok, maybe not) or get some aftermarket engine management and a tune.

[Rav]

Im running a power FC.

Only when im on boost black smoke comes out (the car is warmed up).

[godzl1975]

think just a retune running rich. sorry to hi jack

ive got problem with white smoke when iam off throttle on a roll mainly going down hills when iam in 3rd or 4th gear well any gear really off throttle i get white smoke coming out the exhaust and smell of burning in the exhaust (cat substrate?)...could it be a leak in the intake pipe of the rear turbo (r32 gtr)?? would this create popping sounds from the exhaust as well when off throttle n cruising?

just had car tuned not long ago at CRD as well, PFC, cams, etc....

edit: doesnt do it all the time, mainly on hot days...car idle's fine and boosting from turbos is fine, so not the turbos...i do find oil in the intke pipes to the rear turbo as i have the catch can setup that way...head ---> catch can ---> intake