S-afc(gen1)

[90DSMTurboFWD]

I recently got an S-afc gen 1, the one with the nobs. When i first got my car, the ECu had already been tapped for an AFC so all I did was plug it in(after checking the car code and such). But when I did so, my idle became very screwy(it sounds like it was only running 2 cylinders, it even died twice) And this was with the nobs placed at 0%. Anyway we unpluged it and everything went back to normal. My questions are:
Was the ECU taped wrong?
Would reseting the ECU solve my problem?
Is my car not ready for an AFC? (Running 14b, with a 255 pump on stock injectors.)
Will upgrading to 550's solve my problem?
Is the AFC busted?

Sorry heh I know thats a lot, but I really need some sort of fuel controler, I am running really rich with that 255 pump and it is killing my gas mileage. THANKYOU!

 

[kpt4321]

That means that the AFC is dead (not likely) or more likely that the wiring was done wrong, or you plugged it in wrong. I would re-wire it, and make sure to do it right.


The 255 shouldn't make you run rich, except for at idle.

 

[90DSMTurboFWD]

According to my A/F guage (Yes i know it isnt that accurate) But it says I am running 2 rich over normal just about all the time

 

[kpt4321]

Right, because you can tell you rich you are when the lights are blinky-blinking all over the place? I think not.

 

[DSMRevolution]

Originally posted by 90DSMTurboFWD
According to my A/F guage (Yes i know it isnt that accurate) But it says I am running 2 rich over normal just about all the time

At idle or what. If its steady rich at throttle, idle and everything, then you have a bad o2 or your gauge came unhooked. Something doesn't seem right because a/f gauges are good for nothing. Don't you have a logger? If you look on there it will tell you o2 voltage. The CORRECT o2 voltage. Good luck figuring it out. Besides that I am not sure but I would def. rewire it.

 

[90DSMTurboFWD]

I can't tell at low RPM's but just about anytime I step on the throttle I can tell that it is running rich, the style of A/F I have doesnt have the blinking lights. Anyway I figured out the problem. Since the car came tapped with the wires, the guy had to reconnect the airflow wires in order for the car to run, and when I plugged in the AFC they were still connected, plus getting funky readings from the AFC which must have caused it to run like shit. So i disconnected the wires plugged it back in and it runs like a champ.

Another question though:
for everyday driving, should I tune the to -%'s all throught out the powerband, or will I get really sluggish? I kind of just want it for everyday driving, then be able to set it for racing.

 

[dthquazi1]

check the two wires that the air signal is supposed to go through. If you have the out in the in then it would run crappy.