Apex~i SAFC (II) Discussion/Help Thread

[Cruiserdude]

Could anyone around Columbia, SC do this for me? I've been thinking about this mod for awhile and thinkin it might be good. Got some questions, though.
1. If I'm planning on gettin the S2 in a little while, will it do anything?
2. If I did the return line/fuel pump, how do I get the ecu to recognize it can run higher fuel pressure?
3. If I can only cut fuel pressure w/ the S-AFC II, how can I raise it? I understand how this can help w/ tuning a fuel system for optimal performance, but there is no need to turn it down until I am capable of running higher pressure than stock.

[Roachnigga]

Quote: Originally Posted by NIVO88T

I just figured since there are plenty of Apex~i SAFC owners out there and many are new to it, this thread might be useful for the SAFC Veteran users to help others.

help with:

• Install
• set up
• SAFC to Vehicle connection
• Tuning
• and everything else having to do with the Apex~i SAFC(II)

please try to keep this thread only "Apex~i SAFC (II)"

__________________________________________________ _______

PAP's SAFC Install How-To

I should really put this in the how to section - PAP

Heres how to wire it up:

SAFC
Your going to need a tach driver to get a good rpm signal.

POWER- Redwire (afc)---pin 11 on module C1 (dark blue/red wire)

RPM- Green wire (afc)---tach driver (should be the gray wire)

GROUND- Brown wire & Black wire (afc)---pin 18 on module C1 (black/tan wire) the brown wire should be T'd closer to the PCM.

THROTTLE POSITION SIGNAL- Gray wire (acf)---pin 21 on module C2 (orange/dark blue wire)

MAP SIGNAL- yellow white wire output signal (afc)---pin 23 on module c2 leading to PCM (dark green/red wire)
white wire input signal (afc)---pin 23 on module c2 coming from motor (dark green/red wire)


The C1 module is the bottom connector going to PCM
The C2 module is the middle connector going to PCM

I would also recomend using the MAP signal as a reference in lieu of the throttle position sensor. So, the boost tells the AFC when to go into the high and low setting. Just be sure to refrence the signal before you modify it.

PAP

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Diagram for MAP wire connections from SAFC

Man, ive been searching for a while for an answer of the SAFC install... but, there a problem that i just recently heard... maybe anyone can help... to my understanding, i was told that i needed to use a wideband O2 for proper usage of the SAFC. also, an A/F guage. are these statements true?

Thnx, Bro

Sgt. Rivera
US ARMY Aviation

[NIVO88T]

Quote: Originally Posted by Roach*****

Man, ive been searching for a while for an answer of the SAFC install... but, there a problem that i just recently heard... maybe anyone can help... to my understanding, i was told that i needed to use a wideband O2 for proper usage of the SAFC. also, an A/F guage. are these statements true?

Thnx, Bro

Sgt. Rivera
US ARMY Aviation

your tuning should be done on a dyno to get your Air Fuel Ratio good. or buy a wideband gauge/controller to do your own tuning.

We do sell Wideband kits.

[Roachnigga]

THNX FOR DA INFO, BRO

BUT, I DONT KNOW ANY DYNO SHOPS HERE IN GERMANY... 2ND IM NEW AT TUNING CARS, EFI, DYNO USE, ECT.... IM A MECHANIC... GUESS I GOTTA WAIT TILL I HIT DA STATES

PEACE

[RoostBoost]

thanks for the replys NIVO and Toyoguru!! list of mods:
stage 1
BDJ's 3" CAI
HP T3/T4 turbo kit
HP 3" turbo back exhaust
Greddy profec b spec II
Apex SAFC II
Other mods listed below:
I'm hoping Tiny from Psi fi can sell me his injectors really soon and then all I need is a pump....in wanting to run 20psi+ will I need a map clamp along with the SAFC??

[4trs]

I had been thinking about this question for a while, and maybe it will help others out.

At what point should the SAFCII be used? Should there be a platform of other mods (ie S1 or 2, etc.) first? Or is is pretty much not needed until a larger turbo setup?

I have been considering buying one, but have been holding off on it because I think money could be better spent elsewhere until I go large turbo.

[RoostBoost]

I wouldn't worry about the SAFCII until you go w/a bigger turbo or nitrous....I'd recommend getting S1/2 or even better a greddy profec b EBC as the low boost and high boost settings are invaluable for gaining the much needed traction in 1st and 2nd gears which our cars lack...IMO of course!

[RoostBoost]

I just want to make sure....with bigger injectors/fuel pump, and/or return line I won't need a map clamp to run 20+ psi of boost??

NIVO did you have an adapter or something for a return line that we would need??
Thanks!!

[SRT-4 FIRE]

can some one please post there settings so i can tune mine a little bit as you can see the mods i have in my sig below .

thanks

[toyoguru]

Quote: Originally Posted by SRT-4 FIRE

can some one please post there settings so i can tune mine a little bit as you can see the mods i have in my sig below .

thanks

Do you know how easily using someone elses settings can completely screw your car up?

[SRT-4 FIRE]

true but i just wanted a base to start at so i could kind of get a feel for what i need to do on mine .

[RoostBoost]

settings depend on what mods you have done to your car...our cars run rich till about 18lbs...I've had every mod possible on the stock turbo, w/no fuel management and was at a pretty good A/F mixture of 12.2-12.5:1 on the dyno.

[SRT-4ToFast]

good info guys....

[ACRucrazy]

Yup, just read all 3 pages, very informative!

[MPHSRT4]

does anybody know How to tell if the knock sensor is working on the SAFC, I hooked the wire up like its suppose to, or do I need the tach adapter so it would work with the RPM signal???