I'm just wondering what you have your S-AFC set with your fuel curve and mods. I own a 88 Turbo II, RB full exhaust, Front Mount Intercooler, currently running 10-11 psi of boost, and I have 720cc in the secondaries. I'm finding that I have to lean the fuel curve, from 4000 RPM up, I'm running from -6% all the way to -19%. Car runs strong to redline and Air fuel ratio runs in the yellow range for me. Just wondering what others are running. I really need to get the car on a dyno, but don't have the time.

 

Watch out how much you lean it out. When I used to run mine, I leaned out a little at 5.5k to 7K but riched it up at 3k to5.5k. YOu have to put iton the dyno and see where your peak torque curve is.

Use the logging feature on the unit and see if you top out your air flow. ONce you hit 100% airflow, that's it, that's as high as it will go, you can' t fool the ecu to give it more fuel

I would put the car on a dyno with a lambda sensor and really see how is doing. I would just keep the settings near zero just to be safe.

C

 

I took your advice and re-adjusted my fuel curve, now I'm at a -9% lean on the higher RPMs, and Richer on the lower.. seems to work good.
But I really need to dyno this thing.