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Old 04-08-2008, 10:21 PM   #1 (permalink)
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Default just installed s-afc. HELP!!!!!

edit: this issue has been fixed. if your having same problem, please read on.

I think I'm hitting fuel cut. not sure about that.

ok. after I installed that used device my cars runs like sh#t sometimes.
my fuel system is stock. it idles like it should. but when I'm accelerating or cruising I think my injectors (all of them) stop working till I change Thr position.
02s are at 00 timing at 30. no exhaust sound so I guess no fuel coming in. and that's at low rpms. could it be cuz I got it used and it was set for bigger injectors. I changed correction on it but thats about it. do I need to change anything else for stock? or could it be that I wired it not good enough? bad connection? I seriously don't know what to think already.
thins happens at:
airflow = 100-300hz
thr = 30-50%
rpm = any

orange and pink wires should be on the same ecu wire or orange goes somewhere else?

never went WOT yet.

does anybody know what could possibly cause this trouble.

please help.
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Was bored, had to do stuff: Cross drilled/slotted rotors, S-Tein springs, BOV, intake, exhaust, Datalogger, S-AFC, AEM TruBoost, 560cc, XTD Stage 3 clutch, hotwired 255lph fuel pump, DSM SMICs.
Working on: Driver mod.
E85 powered VR4 since 09/2006
For Sale: stock injectors and pump, SMICs, BOV.
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I gave up...

Last edited by a2j : 04-12-2008 at 10:22 PM. Reason: issue fixed.
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Old 04-09-2008, 05:15 AM   #2 (permalink)
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Default Re: just installed s-afc. HELP!!!!!

Is your sensor type set to Karman?

Stealth 316 - A'PEXi S-AFCII Installation
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Old 04-09-2008, 08:10 AM   #3 (permalink)
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Default Re: just installed s-afc. HELP!!!!!

yes it is. I followed instruction from Stealth 316 and couple more sources.

it should have three unused wires, correct? (white yellow and some other one)

so far according to my searches I think that something is wrong with my wiring and I need to rewire it. but I wanted to see what other people have to say about it on 3si.
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Old 04-09-2008, 08:24 AM   #4 (permalink)
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Default Re: just installed s-afc. HELP!!!!!

Do you have the SAFC or SAFCII? The difference is the knock wire that the SAFCI doesn't have. I'm not sure about how many wires go unused but 2 or 3 sounds right.

Did you vampire tap them / solder them? And are you sure your airflow wires are tapped in the correct order, and the grounds are in the correct positions?

SAFC II Manual

SAFC I Manual

SAFC Wiring Guide

Wiring Supplement
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Old 04-09-2008, 09:29 AM   #5 (permalink)
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Default Re: just installed s-afc. HELP!!!!!

"my fuel system is stock"
you said you're on stock fuel? You should have your low settings and your high settings at 0 across the board. Lawdogg has given you everything you need to make this work.
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Old 04-09-2008, 09:43 AM   #6 (permalink)
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Default Re: just installed s-afc. HELP!!!!!

Pink and orange, yes should be on the same wire. The Airflow wire into the ECU should be cut, and the orange wire connected to the far side of it with the pink wire connected to the end closer to the ECU.
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Old 04-09-2008, 01:50 PM   #7 (permalink)
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Default Re: just installed s-afc. HELP!!!!!

that could be my problem.

so airflow wire should be cut and should be going thru that device and not straight into the ecu, correct?
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Old 04-09-2008, 01:50 PM   #8 (permalink)
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Default Re: just installed s-afc. HELP!!!!!

Exactly.
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Old 04-10-2008, 06:35 PM   #9 (permalink)
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Default Re: just installed s-afc. HELP!!!!!

ok, I just did that and karman shows 3hz only.

I guess I did something wrong again. loose connection? it idles horrible.
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Old 04-10-2008, 06:58 PM   #10 (permalink)
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Default Re: just installed s-afc. HELP!!!!!

Man, I don't know what to tell you aside from the wiring diagrams. Make sure everything is hooked up right, make sure it's set correctly ... it should work.
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