SAFC not maintaining correction?

[V8slayr]

I've just noticed that my SAFC2 will not maintain correction over the a/f. When I'm at idle normally my a/f is 13.8 or so, so with my SAFC i pulled 8% fuel and a/f rose to 14.6. However when I take off driving and stop again and let the car return to idle the a/f goes back to where it originally was, 13.8. Then, when i set the SAFC back to 0 correction the car idles around 12.8. WTF????

[UNISA JECS]

How are you monitoring yoru A/F ratio? or better yet what is your entire setup?

[steve shadows]

http://www.theinternetsite.com/hhp/Cleaning/trashcan.gif


then buy this

http://www.turborx7.com/images/Technical/0301_00.jpg

or this

http://www.redz31.com/images/fuel/jwt2.JPG

[V8slayr]

redtop, stock ecu, stock MAF. S14 T28, FMIC exhaust. Innovate wideband
Just curious if anyone has had same issue or can tell me what is going on, Thanks

[UNISA JECS]

Its probably just the stock ECU LTFT and STFT (long term fuel trim / short term fuel trim) readjusting/compensating for the changes you made to the SAFC since you cannot change closed loop a/f ratio's because the stock ECU always shoots for its targeted A/F ratio in closed loop operation.

What size injectors are you running?

[makulit054]

I have the same issue and same setup except stock T25. Just like UNISA JECS said. Your ECU will adjust for it's targeted afr by using your stock o2 senor. I have the same set up but I am able to adjust my idle afrs through the DEC AIR function with the settings, 1.0%, NE01 1.4 and NE02 to 2.5. Basically, I am using the SAFC 2 for the DEC AIR function. I called APEX'i they couldn't give anymore help. Get a standalone.

[zavala]

listen to Steve on this one man. the SAFC is a band-aid for a bullet hole. lots of people buy it and then don't understand why they just bought this expensive new toy for their car and it doesn't work right or do what they want it to do. but guess what, lots of companys make crappy products and lots of people buy stuff from them. and they're never going to change them or up date them no matter how much you complain or would like them to do because vast amount of people are still buying them and they're making their money lol.

[johngriff]

http://www.zilvia.net/f/showthread.php?p=1077578#post1077578