help, cant get car to run right with 370s, safc2, stock maf

[chmercer]

I got my ka-t setup running but it is running very, very rich. lots of black smoke. also the idle dips pretty hard after i rev it. it dosent stall though.

on the safc i have tried everything, it seems like the safc is not functioning or somthing. firstly i set it to -27% correction. i have also tried setting it to -50 on the lower rpms, also +25 rpm, and the idle does not change at all. i am hoping it is wired incorrectly, that is all i can think of. but this seems strange because the car has worked perfectly while N/A. also all the other safc functions work, throttle position, rpm, etc etc. can anyone add anything? i have messed with dec air ne points and everything else and nothing will make the car idle any better.

[Jookmasta]

hows ur 02 sensor looking? also what's ur vacuum at? and yes, go back over the wiring of the safc. maybe something got loose (unless u sautered it all). u didnt mess with the timing did u?

[Florida240sx]

For me to keep my car idling I had to leave my A/C on so it would idle at 1000rpms where the safc could control the fuel

[crzycav86]

What are your in/out settings on the safc?

[Structure240sx]

mostly likely has to do with in/out settings and dec.air settings

[chmercer]

5 in 5 out, and 1 in 1 out on the other part. dec air settings are standard numbers, didnt mess with them. o2 sensor could possibly be ****ed up but i dont think it would make me run THIS rich (i have a black circle on my driveway)

its on stock timing, i was trying to get it fixed up so i could retard the timing but it was running too poorly to mess with it.

heres a post i put on FA, with more info

"i re initialized it and i set it at 5 in 5 out, 1 in 1 out on the other one, throttle arrow pointing up, 4 cyl, -35% on fuel correction on low throttle, didnt touch high throttle since im only idling it in the driveway.

i can set the correction values to whatever i want -50 +25 anything, and the car runs exactly the same. but when i monitor the af% it seems to work right, its about 2% at idle, goes up when i rev. also when i go to sensor monitoring in the misc menu it shows voltage at like 1.5ish at idle, it goes up to 2+ when i rev it.

does anyone have any ideas? this is so lame

also im almost positive it cant be leaky injectors because the car has no trouble with cold starts.

im almost positive i wired it right, all the other stuff, throttle position, rpm etc. seems to work, but the only explination is that i wired it wrong.

could somone show me exactly where to do the maf wire? like with an actual picture? the only thing i can think of is that im reading the wiring diagram wrong and somehow managed to put the maf wire on a non crucial wire (the car has been running NA with the safc installed for the past 6 months).

thanks for any help you guys can offer "

[s13drft89]

Does the car shake? Start up the car, then unplug the injector clip, one by one, now you wont notice a difference in like 1 second, keep it unplugged for about 5 or so, now if the idle stays the same then is either the plug or the oring. Try it for all four, on one of the injectors the oring might be bad, and just dumping in fuel, happened to me, when i had blowen orings my car would start up no problem on a cold start at around 40-60 deg, of course at night, and yes a over nights rest. I have the same set up 370's, safc, and stock maf. I have all my in/out points to 5in and 5out, except for the last which i think is pressure i have that at 3in and 4out, due to not recirculating my bov.-RickyPS Also my car is running filthy rich, i changed my o2 senor, and didnt help. Iam in the process of waiting for the dyno to open back up, so i can get mine tuned.

[Craving4Boost]

when wiring the MAF wire from the ECU to the SAFC, did you make sure to CUT the MAF wire? the ONLY wire that needs to be cut. just checking...if not..theres why nothing changes

[Structure240sx]

mess with the dec air settings. try something like .5 for all of them. then try 1.0 then 2.0 for each. see if it makes any changes

[chmercer]

yes i did cut the maf wire, pretty sure i connected it right, im thinking maybe i hooked the input and output wire up backwards or somthing.

another thought i had is maybe my maf is wired wrong and the safc is hooked up right but is sending voltage to the wrong wire making the safc do nothing.

could anyone please take a picture of their maf plug, plugged into the stock maf, with the wiring exposed, so i can make sure to get the orientation right when i re pin it? otherwise im just gonna guess wires

[1WheelWonder]

Did you lube your injectors really well when you put them in. I suffered from the same symptoms when I first got mine running.

[Florida240sx]

Got a dead Ka becaus eorign tore and got fuel into my oil...spun rod bearing. Only guess is you got maf wire backwards or you cut the wrogn signal one. http://web.ics.purdue.edu/~tme...c.htm

[dj_hype]

IIRC, the low throttle setting on the SAFC doesn't kick in until 10% throttle. I think low throttle runs from 10%-50% and hi-throttle runs from 51%-100%. that would explain whey at idle changing settings doesn't do anything. also, i think the SAFC only starts correcting above 1000 rpms. try turning on the a/c to get the rpms up a bit. and whats your vacuum readings?