My car is always running perfect.....suddently one morning he start to run rich from idle to redline. My map sensor is ok, the fuel regulator and the o2 sensor too, someone have any idea ?

B18b turbo with the afc hack (SMC)

 

how do you know its running really rich?

 

Need more info about your set-up. So rite now your Guess is as good as mine rite now.......

 

He's running AFC hack so he should have injectors... Maybe one of them is seized up, but not enough info to make that determination... ...

 

I know is running rich because I have a/f guage, the car smell gas and black smoke when im running.

afc hack, 450 injectors....

 

The car run like a 60 psi fuel pressure with the afc hack...but the regulator is ok...

 

do you have an adjustable regulator or stock? did you take the vacuum line of it to try to lower fuel pressure at idle?

 

The regulator is stock and the pressure us good with the vaccum connected and off...when i try to lean with the SMC (-50%) my guage read same thing ...very rich!

 

what fuel pump?
And you cant tune with your air/fuel ratio gauge unless it's a wide band. If it's just hook up to your stock o2 sensor it's worthless. It's only accurate enough for a bone stock car, it can only read accuratly close to atmospheric pressure (14.7:1) since you run richer when you go turbo (12.0:1 +/- a little) it cant accuratly readd the air fuel ratio. Mine reads the same (2-3 bars into the green) at 12.1:1 air fuel ratio as at 10.0+:1 ratio (still 2-3 bars into the green). It reads the same if i'm exreeeeemly rich or just perfect. I learned that by tuning my car with a wide band o2.

 

The car probably running rich before, but one morning it start to run extremelu rich,smell gaz , black smoke and now the a/f meter light not just 2-3 bar but 6 or sometimes all....very weird problem. Thank's for help and info!

Just to know, TD04hl is a turbo from which car ?