Safc Install

[ducki]

i just tried to install the safc2 .. wired up the power and 2 ground.. turn on ignition and nothing comes on..

i am pretty sure i wired them to the correct ones ..

would i be able to connect it straight to the battery to test if its working? eg. 1power wire to +ve and 2ground wire to -ve on the battery?

[QWK32]

is it a brand new unit? yeah that will work to see if its working or not.

[ducki]

its not new.. its just that.. in the wiring manual.. it said connect 2 ground wire... atleast 1cm apart.. so i'm not sure if i connect both of them to the -ve terminal will damage it or not..

[ducki]

ok.. manage to get it starting now..

went through the initialize stage before starting the engine..

sensor type - hot wire - in 1 out 1 - in 1 out 1

car - 6 cyclinder and arrow diagonal up

when go in sensor check.. it shows voltage on afm input 2 and not 1 .. and throttle was showing 0.65v

when i start my engine after initialize setup.. the engine drops rev to 600rpm and the light on top right corner lights up.. (assuming its knock?)

when i unplug the afm wire from the safc and plug it back normally.. engine is fine .. but as soon as i plug the afm wire into safc ... it drops idles and shows knock on my dash

the white wire from safc is connected to afm input and outputs on the yellow to the ecu.. so i am pretty sure i did it correct.

when i first start the engine.. it seems to be running fine.. idle normal but when i went into the monitor section and held the arrow to the right... the engine just dropped the rev and knock sensor shows up.. so i am not sure what i did..

help me please... is there anyway to reset the safc? and how?

[QWK32]

yes its wired correctly you just haven't set it up properly. when you choose you sensor type select Hot Wire as the sensor, the Sens.NO should be 04 04, and in Sens.Cal it should be 01 01. should be all good if you set it to this.

Edited October 17, 2007 by QWK32

[ducki]

ok.. thanks for the reply..

just want to make sure something.. with initialize..

do i go into initialize and choose yes after everything is done, then turn ign off.. is that correct? or am i suppose to go into initialize .. as soon as i turn on ign?

[QWK32]

initialize is the mater reset. don't do it unless you want to reset the safc to factory settings.

[ducki]

ok.. so now i've tried to set the sensor type to hotwire 4in 4out.. cal 1in 1out..

when i start the engine.. the revs goes to 2krpm now with the ... sensor lights up as well... (top right of speedo) .. what is wrong with it? i tried change it back to 1in1out and same thing ... it jumps to 2krpm rev... and stays constant.

i unplug the afm wire from the safc and plug it back witout the safc and it works fine again... is there something wrong with my safc? am i going to damage the engine if i keep trying to work it out by doing these things?

[GTST98]

ill have a look toomra at what my setting are on mine i had a simlar prob but worked it out using the instructions have you got the whole manual? if not u can copy it from the apexi web site

[QWK32]

ok.. so now i've tried to set the sensor type to hotwire 4in 4out.. cal 1in 1out..

when i start the engine.. the revs goes to 2krpm now with the ... sensor lights up as well... (top right of speedo) .. what is wrong with it? i tried change it back to 1in1out and same thing ... it jumps to 2krpm rev... and stays constant.

i unplug the afm wire from the safc and plug it back witout the safc and it works fine again... is there something wrong with my safc? am i going to damage the engine if i keep trying to work it out by doing these things?

the sensor type , hotwire 04 in and 04 out is the setting for all skylines (unless gtr, its 03 03) so leave that set like that. just looking back at your previous post and you said the afm signal voltage is coming in on signal 2 not signal 1.

have you tried using the other afm signal in wire, usually used with twin afm applications, but maybe your wiring was hooked up the wrong way at the factory by mistake, not your fault. you need the afm voltage to be coming in on sensor input 1 for it to work properly. i think you aren't getting a signal sent out to the ecu because it isn't getting one on input 1.

lets say this is the case: (dont worry it wont damage your engine)

to quickly check this you can change the SensCal. to 02 in and 01 out. this will accept signals on both inputs. if your car runs ok then then you know the input signal wire are the wrong way around. switch your afm input to the other input line and set the SensCal back to 01 in and 01 out.

i hope this makes sense.

[ducki]

can't set sensor calc to 2in 1 out.. when i change to 2in, it only shows add or ave on out..

ok.. i've just tried sensor calc to 2in add out.. and still no change... rev still drops to 600rpm with tcs, slip and knock lights up on the dash.

Edited October 21, 2007 by ducki

[LedZepLen]

would that Apexi unit work well with turbo and injector upgrades like to make mid to high 300's? and if you aren't an idiot can you figure out pretty easily how to tune it right. I'm stuck in between a greddy E manage and an Apexi AFC type unit. I think the Apexi unit would be easier for a first time user but i'm unsure of it's capabilities in the real world.

[ducki]

the safc ... doesn't support injectors..

with the power your aiming at.. i think it's better to go stand alone ecu.. or the emanage ultimate.. not too sure..

tune needs to be done on the dyno..

[xRHETTx]

and if you aren't an idiot can you figure out pretty easily how to tune it right.

Sorry mate but you absolutely need either a dyno or a wideband AFR meter to tune a SAFC correctly. And most people who have SAFC's have neither of these.

[ducki]

does anyone with an SAFC2 in their r34 i can take a look at?? this is driving me crazy... no matter what settings i try.. there's no change.