SAFC Problems

[Cheezit033094]

Hey guys, just installed my Apexi SAFC 1 in my 90 Talon TSI AWD, last night and while I was in there, went ahead and installed my AEM UEGO wideband O2. After reconnecting the battery and starting my car, it fired up and immediately stalled, which I expected to happen. I gave it a few seconds and checked over all the SAFC setting, verifying that it's set for karman and the throttle set northeast. I started the car again and she idled fine until going off the gauge lean. Any injector adjustment I'd make had no effect whatsoever. I let her idle for a bit and it got a little better. I tried to drive it and any time I'd push the throttle any more than 30%, it'd shoot straight to 10:1 and sputter out real bad. It then Gabe multiple misfires and stalled. I clipped the wires for the SAFC, reconnecting the pink/orange and black/brown wires and disconnected the negative battery cable for a few minutes to reset the ecu. When I started it back up, it was at 14.7 and then slowly leaned out to over 18:1. I followed the vfaq guide to 1g Safc installation and didn't use the blue, yellow, or white wires. What do I do here? Thank you

 

[rich3389]

Remove the SAFC and get something to actually tune with, ie dsmilink.

 

[Cheezit033094]

I already pulled the Safc and it's still screwing up

 

[2g spyder eclipse]

Check the wires you spliced into. My afc works just fine.

 

[Cheezit033094]

I'll pull all the plugs and check back over them. Can anyone verify that the vfaq guide install is correct? What do the yellow and white wires go to? Should I use the blue o2 sensor wire?

 

[Cheezit033094]

I'm rocking my 1g. Sorry, I need to update my information.

 

[Phantom DSM]

Are you grounding to pin 101,106 on the ecu pinout ? Brown wire closer to ecu

Ground (Brown and Black) - Pin 106
Ignition Power (Red) - Pin 107
RPM (Green) - Pin 54
Kocking Signal (Purple) - Pin 9
Airflow Signal output (Yellow) - Pin 10
Airflow Signal input (White) - Pin 10
Throttle Signal (Gray) - Pin 19

 

[Cheezit033094]

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I used these as the reference. I was under the impression that the pink and orange wires were the air flow wires

 

[Phantom DSM]

yes orange and pink are airflow wires

 

[Cheezit033094]

I believe that I set the orange wire closest to the plug. Would swapping the orange and pink fix it?

 

[Phantom DSM]

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You can try swapping but i dont see to much of an issue, its only specifies for grounds. Although its usually an issue on analog circuits, but not with our cars. The first pic you posted shows using the blue wire, dont use that.

 

[nismoz]

Remove the SAFC and get something to actually tune with, ie dsmilink.

Seriously dude? Thats your idea of helping.
Not to be the ass of dsm but if he had/could afford dsmlink, his thread would say
"dsmlink problems" and besides if he doesn't have something wired right dsmlink won't work either.

OP karman setups on most afc's use a diiferent set of air flow wires on the safc than hotwire and etc. Unsure of the colors cause im not in my shop but if you havent got it when i go out in the morning ill post them, but chk an see if your on the wrong set of wires.

 

[Phantom DSM]

I found this install as well in a 91 dsm with full pics. Looks like pin 21 gets the full rpm signal
SAFC Install

 

[Cheezit033094]

Phantom DSM, I think I found the problem, thanks to your last post. I had the ground wire clipped and run similar to the air flow wires. I guarantee that's what went wrong. Thank you. As soon as my phone charges enough to be used as a flashlight, I'm going out to fix it.

 

[deviousgst]

(Havent read all replies)
Have you tried zero'ing out the safc? Maybe it's running rich/lean due to previous owners tune

 

[Cheezit033094]

I made sure it was totally zeroed before starting the car for the first time.

 

[93'colttsi]

I'd recommend ditching the safc and getting a eprom socketed with a ostrich and tunerpro RT running maf or speed density tune.

Problem with safc's is as you lean them out or compensate for bigger injectors, you end up getting too much timing advance, and end up knocking. With tunerpro or dsm link you can have full control of timing and also fuel as well. Not to mention all the other features availible like launch control, NLTS, boost control, meth solenoid control as well as cold comp adjust tables and intake air temp compensation as welll.

And you can get this setup for like 300-350 (socketed eprom, ostrich 2.0, tunerpro is free with a recommended donation)

 

[Cheezit033094]

I definitely appreciate the advice there. I'm only using the Safc until I can save up the money for link. I'm parting my 2g and, honestly I'm debating trying to trade my full 7 bolt with forged pistons for a linked ecu.

I went out and reconnected the grounds and made sure every wire was good and we. I started the car, I had a little control and then it leaned all the way out and even with an added 50 percent fuel, it changed nothing.

I tried to use it again and no such luck. I saw that my uego wideband was reading p00 so I turned the dial until p04 came up. I tried again and it still wouldn't let me make adjustments and lean right out. I unplugged the Safc and connected the pink and orange wires and voila, she oscillates between 14.3 and 15.0. I haven't test driven her yet but I'll let you know what happens

 

[Cheezit033094]

Just drove her to work and everything is good. The wideband was sending too much voltage so the ecu thought it was running rich and cut fuel accordingly making it lean out real bad.

 

[Phantom DSM]

cool man, good to hear. Let us know how she runs

 

[Cheezit033094]

Thank you guys very much for the input and help. I guess ill change this one to resolved