My T2's air fuel ratio is very RICH now.
what should I do? wear too much gas and the smell damn crap.
help thx!

 

get an safc and get it tuned while you are at the dyno! The safc will lean your car out where you don't run so rich.

 

Before going with any extra equipment or mods, make sure you have done all Stage Zero performance mods, which basically means, make sure the stuff that you got is in working condition before adding stuff to fix a problem that may not even exist.

Unless an obvious performance mod brought about this condition, and this condition is to expected from the mod, I would suggest this course of action first.

 

how do you know it is running rich.

At what rpm do you think itis running rich

James

 

when I running on constant speed the air/fuel gauge going from lean to rich again and again. when you push more gas, it's on the rich area......
and the exhaust...... smell so bad and smoke......

 

Dude, its supposed to be like that. When your computer is sampling from the O2 sensor to acheive good fuel economy, it is going to cycle from rich to lean back and forth, and then when you hit it, it will go to rich and stay there until you settle back to a constant speed.

If you have a turbo rotary with an exhaust, it is going to smell like a **** gas chamber when this happens from the perspective of anybody riding behind you, especially is you have no catalyctic converters.

What is the color of the smoke you are seeing?

 

RoninAutoBoX you right, thx a lot, my English holy crap.
the smoke.......I dont really sure waht color is it, but I am sure it's not oil it's gas. and my car is turbo and with racing beat complete exhaust and downpipe with no cat.