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Discussion Starter #1 (Edited)
Here is the write-up of my GA16DET S-AFC 2 settings that everyone has been asking for. For these settings to work, you need the following (or some variation):

THIS IS ONLY GOOD TO 8 LBS OF BOOST!!!!!

GA16DE
259cc injectors
Walbro 255lph fuel pump
stock fpr
Nissan Maxima N60 MAF
T25 turbocharger
A'pexi S-AFC 2

Here we go:

Sensor Type = Hot Wire
2 in 7 out (works best for my car)

Ne Points =
1 = 1000 rpms
2 = 1600 rpms
3 = 2200 rpms
4 = 2800 rpms
5 = 3400 rpms
6 = 4000 rpms
7 = 4600 rpms
8 = 5200 rpms
9 = 5800 rpms
10 = 6400 rpms
11 = 7000 rpms
12 = 7600 rpms

Throttle Points =
Lo = 67%
Hi = 6%

Dec Air =
Throttle = 2.0%
Ne1 = 0.5%
Ne2 = 0.8%

Now for the fun part; fuel adjustment

Low-Throttle:
-21% all rpms

High-Throttle:
1000rpms = -21%
1600rpms = -21%
2200rpms = -21%
2800rpms = -29%
3400rpms = -35%
4000rpms = -35%
4600rpms = -35%
5200rpms = -35%
6400rpms = -35%
7000rpms = -35%
7600rpms = -35%

To set when the S-AFC 2 switches from Low-Throttle to High-Throttle settings, you need to determine at what throttle percentage your engine hits boost. On the T25, I believe it is at 23% throttle, but don't quote me on that. Hope this helps everyone who is trying to set up their turbo on a GA16DE.
 

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this is awesome, Biscuit this is anid314 from youtube, this should be a great help, are these the settings you said you would write down for me once you drove the car? Now these are good for any amount of boost UP TO 8 POUNDS!????
 

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Discussion Starter #3
Yes, these are those settings. I say these settings are good up to 8 lbs because that is what my car is currently setup for. As a note to anyone trying to use these settings, this is just a guideline to get you started. The best way to tune your car is to get a wideband and do some driving, which is what I did to get these settings.

Now, with you having the S-AFC 1, I am not sure about how to set that up. The Ne-points are the intervals where you adjust your settings (i.e. 1000 rpms, 2000 rpms, etc.). I just list the intervals I chose, you can change them if you deem fit. Some of the settings I do not understand myself, my friend helped me set up everything and did most of the critical work. I just copied down everything I saw on the S-AFC 2.
 

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sounds good, i have a buddy who actually installed mine, I guess ill have him, set it up for me, nice wirte up. I am sure that these setting should be fine for my car since we do have almost the same setup!!
 

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Discussion Starter #6
I think just about all T25 turbos are set at 8 lbs, but it really just depends on the wastegate actuator. If you are running at Mitsubishi T25, I think those might be set at 10 lbs, but I'm not certain.
 

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well i know this is kinda off topic but what do u have your timing set at on your car biscuit. i have the same set up as you just with a t25 off a mits.
 

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Discussion Starter #9
I do have my timing done, but I honestly can't remember what I have it set at. As soon as I get back home (Thursday), I'll use my timing light and get back to you on that. Thanks for the sticky endorsement.
 

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question. in your high throttle points i see the % going down when the rpms get higher. should they be going higher towards -0/+0 so that your putting more fuel into the motor as your rpms increase..idk thats just something i was wondering before i set mine up like this.
 

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Discussion Starter #11
It does seem a bit peculiar as you mention. I suppose this is because I am using a stock ECU and it automatically throws more fuel at higher rpms as it would on a NA engine. Since they are 259cc injectors, I suppose you have to back off the fuel because they are designed to spray much more than the 185cc injectors at higher rpms. For example (hypothetical here):

NA car:
1000 rpms = 185cc injectors at 30% total spray
3000 rpms = 185cc injectors at 60% total spray
7000 rpms = 185cc injectors at 90% total spray

Turbo car:
1000 rpms = 259cc injectors at 30% total
3000 rpms = 259cc injectors at 60% total
7000 rpms = 259cc injectors at 90% total

90% of 259cc is much more than 90% of 185cc injectors right? So, basically 259cc injectors are having to be scaled back by 35% overall to make your air to fuel mixture ratio dead on as opposed to rich. Hard to explain, I think. But all of these numbers were gotten via wideband, so they are at least proven on my car and I have never had any problems whatsoever. Actually, on a warm day, the car actually runs a bit rich to avoid any possible detonation.

DISCLAIMER: all of these settings are for 93 octane fuel!
 
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