Initial settings for S-AFC - everyone's opinion

[94TSI4Kicks]

i have no idea wtf i am doing with mine.. i tried to tune to o2 but recentally with the weather changes it has been hitting very weird.. my hi/lo is 35 75
th points is 1/2/3/4/4.5/5/6/7
and i am running 3-7 from 3 grand to 7
and lows i am runnin 1-3
but i am hitting 95/100/105 and i tried adding more but it didnt change my o2's any help
intake no honeycombs
k&n, UICP
runnin 16-17 lbs
stock turbo
2.5 downpipe test pipe
3 from that back

 

[aektsi]

with menu in the apexi afc2 r you guys using to measure knocks,,,,
in the monitor menu channel 1-4 or
in the setting menu 6. knk set.....

cause in the setting menu i get lik 70- and up
in the monitor i get 0

and do we have to change the dec. air and other setting....
i have a 255 fuel pump, 680cc injector, set evo 16g at 20psi,,,

thank in advance!!!!

 

[rjgst]

What are u runing with that set up?

 

[aektsi]

low is -18 the whole range...
the high 1k -36, 16k, 35, 22k 34, etc....

 

[HiB00ST]

Originally posted by TheTSiGuy
For all those looking to get information or settings...beware.

Example. Myself.

With all the mods i have, i should be able to run AT LEAST -15 across the board on my hi throttle side. My buddy and I did a datalogging run last night (NOSLO2PT0 on these forums) and guess what? Looking at the log, i needed at least straight *0* across the board pretty much to keep the knock count below 7. Every car is different.

I'd just hate for someone to use someone elses settings and blow the engine apart. I think its ok to reference eachothers settings...but some of you guys are looking for these settings to use on your own car. be careful.

this was something i was thinkin of. not all cars are the same...
i have a quick newb ?

here are my mods.
EVO III 16G w/manifold and O2 housing
intake
2.5" DP
hi flo cat 2.5"
3" tanabe exhaust
8mm plug wires
Greddy Profec B boost (Lo @ 10psi and hi @ 15psi)
a/f gauge and boost gauge (just to "monitor")
APex FMIC and UICP
Greddy BOV
S-AFC

and i have 550s sittin in my desk that i havent installed yet
cuz i heard that i need somethin to control em or else i'll
damage the motor. i dont wanna push more boost cuz of that.

my next step were as follows...
new clutch and motor mounts
190 and dyno tune!

but can i install my 550s now and adjust the SAFC settings
to get a lil more until i can come up with more $$$$?!?!?

thanks...

 

[scottr126]

I have a 90 Tsi AWD. My main modifications are Big16G@ 19psi, 550's, 255 lph fuel pump @ 39psi, starion fmic with 2" uicp, greddy bov, and a 3" intake w/ K&N. Other mods are in my profile but those are really the only ones that matter. I have a S-AFC2, what would be some good base settings for me. Also I will be shooting a 50 wetshot of nitrous once I get my car all tuned, should i tune any different for this?

 

[GSTspyder98]

i've been reading over this post trying to find the same or very similar settup to help give me a real close guideline on my s-afc settings...i would like however to see if someone could offer me accurate initial settings for the following settup if anyone happens to know

mods include:
50 trim precision T3/T4
650 injectors
255 lph pump
FMIC
dejon UICP and LICP
K&N FIPK
HKS SSQV
PORTED EVO III O2 & MANIFOLD
3 IN DOWNPIPE AND EXHAUST
GREDDY PROFEC B
S-AFC 1

any help is truly appreciated, thanks guys

 

[scottr126]

I think this thread is dead or dying....

 

[GSTspyder98]

i know this is dying, i just didn't want to post a new thread about s-afc settings and have everyone tell me to go research this thread, i would love to post a new thread, but i understand this has been beaten to death

 

[monstertalon]

d_tsiawd did you ever solve yur problem??

I have a new evo 16g and 550's and I am getting the same deal, low trims are at about +23% accros the board and the low fuel trim is reading 103%.
When I do WOT pulls I get serious 43 knock count and the timing gets pulled to -2deg, through the whole range. I have a new o2 sensor and knock sensor.

My problem sounds just like yours, just wanted to know if you had any luck solving it? I still get knock on WOT with + or - fuel trims on the SAFC, I have tried +20% and -20% with the same result.

 

[papifry]

I have read all of these posts regarding initial setup of the s-afc, and have also beared witness to other posts in a different thread where members argued like school children over my problem without concluding in any positive feedback as to what I should do.
Right now most of the upper portion of the engine bay (block up) is sitting in my kitchen floor. I have several new parts awaiting installation, but I am a bit confused about how it will all go together. Here is what I have...

680cc injectors (uninstalled)
3" GM MAF & MAFT
255 lph hp fuel pump (uninstalled)
EVO III 16g (uninstalled)
A'PEXi S-AFC II (uninstalled)
3" intake w/ Weapon R dragon filter
3" UICP

 

[papifry]

Here is my problem...
I want to use both the MAFT (for translation purposes only) and the S-AFC II together but i am not sure how to set up the S-AFC II to cooperate with the GM MAF & MAFT. Is there something special that needs to be done to get this to work properly? Is there anyone who can advise me in the proper setup of the S-AFC II based on the other mods I have ready to go on. I am also concerned that i may have gotten my injectors too big. Are 680cc injectors too big for the other mods I have?
Please... I am seeking good advise, not flame about why I chose this particular setup, but since I am very green, I do expect constructive criticism.

 

[norice4me]

hey every one what would be my setting on the safc with these mods thanx

Exhaust
Buschur Racing 2.5" downpipe
2.5" Test pipe
Dynomax 2.5" cat back
Ported '95 Exhaust Manifold
Ported O2 housing
16G/TD05H ported and clipped with ported 7cm2 turbo housing

Motor
Unorthodox underdrive pulley
95 pistons
big rods
blance shafts takin out
fluidyline radiator
high cooling fan

Electronics
Blaha MAS
APEXi Super AFC
turbo timer
evc boost controller
reprogrammed ecu

Intake
K&N Filter
Hallman manual boost controller
Turbotrix 2.5" upper intercooler pipe
Turbotrix 2" lower intercooler pipe
Turbotrix front mount intercooler

Fuel System
Walbro 255HP Fuel Pump
510cc injectors waiting on 660s

 

[UndergroundR32]

All I would like is an "idea" of what my low throttle settings should be. I have 720's and a 50 trim t3/t4.

 

[LandoAWD]

A logger would be a good "idea".

Personally I haven't been a fan of this from the start. Too many factors involved to go off someone elses tune, not to mention it could cost you an engine.

 

[UndergroundR32]

I have a logger. What the fu** good is that for if I'm asking for inital settings to base off of. I want low throttle settings not high. I'm not going to blow my motor up by taking someone elses low throttle settings (who has the same size injectors and turbo) and applying them to my setup. My fuel trims are fudging me all up because something isn't right. I put my low throttle at -10% across the board and it's telling me my low fuel trim is lean.... That's near impossible.

 

[i'm boosted]

Hey underground, I am having the same problem. My low fuel trim is pegged at 139%. I am in the process of buying a new O2 sensor. I am at -10% and I can smell straight gas out the exhaust so I know I am not running lean. I will let you know. Oh, I have a Big 16G 550s hacked MAF and SFC II

 

[UndergroundR32]

Hey underground, I am having the same problem. My low fuel trim is pegged at 139%. I am in the process of buying a new O2 sensor. I am at -10% and I can smell straight gas out the exhaust so I know I am not running lean. I will let you know. Oh, I have a Big 16G 550s hacked MAF and SFC II

Mine is pegged at 118%

 

[LandoAWD]

I have a logger. What the fu** good is that for if I'm asking for inital settings to base off of.

It is HOW you set them. That is "what good it's for".


------------------

Here is the "basic" tuning drill for the AFC, courtesy of Kyle Tarry:

"Ok, for all of you guys who are asking what to do since you just got a SAFC, here's the drill:

FIRST, BUY A LOGGER! Non matter what people say, you cannot maximize the capabilities of your setup without one. And, for the price of a good EGT gauge, a pocketlogger can be yours.

Now, on to the good stuff. Set the SAFC up, with the throttle poits at about 30% and 80%. Spread the RPM points across the rev range from 1000 to 7500 or 8000 rpm.

Start by getting the fuel trims in line. Adjust the 1000 rpm point with the car at idle until you get the low fuel trim in the 100%-115% range. Then, do they same for the mid and high fuel trims while moving in their respective zones. (probably about idle, then slow cruise, then a faster cruise). Once you have them all around 110%, then you can carry those numbers you used across the low throttle map, and also use them on the high throttle map.

Now, you should have the high throttle map set up with the same numbers you used on the higher RPM's of the low throttle map. Make a WOT run, and log it. Now, look at the log, and at every 1000 rpms simply decide if the engine is rich or lean. If it is lean (knock) then richen the AFC up a click or two, depending on the severity of the knock. If it is rich (no knock, good O2's) then lean it out a click. Keep doing this until you have all the rpm points set up to a few % right above where it starts to knock.

That's really about it!"

-------------

Kyle also has a neat little corrections spreadsheet, but I only have it at work.

 

[UndergroundR32]

Perhaps you missed what I said. -10% across the board should make me extremely rich. If my low fuel trim is increasing to 118% no matter how much I add fuel (pull less) then something is probably causing a wrong reading or something else is interfering with my fuel. Possibly the VPC or my ECU. If I have an idea of what my settings should be at by copying someone elses correction settings then I can try and diagnose the cause of the problem. However, I have no idea what my settings should be around. I do know that -10% is filthy rich with 720's.

 

[1fast97gsx]

This thread needs to be cleaned up .....

 

[papifry]

Maybe so...Great info though from LandoAWD.
Thanks!!

UndergroundR32 simply needs more precision advice for a more precise problem. That is what I thought this site was about. People who have had experience sweating and bleeding for their DSM, troubleshooting problems that no one else knew the answers to and then relaying that experience to newer generations of tuners who are in this for the same reason... they know the secret... that DSM's simply put are the best damn cars ever built.
So why is it so hard then to get someone to even answer a post with an honest problem... is it because we must be newbies for having problems to begin with?? Should we be flamed for asking for advice? The fact of the matter is that A'PEXi S-AFC's are complicated frikin little devices, and unless you fully understand how to operate one you can seriously f*** up your DSM. So for everyone who reads this and doesnt have one... LandoAWD is right. If you dont have a datalogger... get one. I dont, and I will not install my S-AFC until I do.
Again... Thanks LandoAWD. Info like that is golden.

 

[LandoAWD]

Please give Kyle (kpt3421...or some numbers after the kpt ) credit. I just use his his reference materials like the rest of you guys.

 

[larryriverside]

it's hard to give advise sometimes. just the fact that every car is a little different makes it hard. i have the exact same setup as someone around here. he said he was at -10 on pump. i was at +7. i kept thinking i could get more power by leaning it out. not the case, all i got was knock. thank GOD i had a datalogger before i did this. there are so many variables involved that a person just has to know what the hell they are doing sometimes. this is kinda a flame job, but really we can't tune your car, and i don't know if we can really get you close. you just have to consider all the factors (injector size, fuel pump, fuel pressure, boost, mass, etc.) then figure it out. that will get you close. then go from there. also, you can't really get mad at people for not sharing what they know. they aren't getting paid for it. they do it just to be nice. when it came to tuning i didn't get any help either. the smart people are smart enough to know that they can't really help us. not without looking at the car personally anyway. thats just my own thoughts on this thread. so don't get mad at me dammit. i was there

 

[UndergroundR32]

Maybe so...Great info though from LandoAWD.
Thanks!!

UndergroundR32 simply needs more precision advice for a more precise problem. That is what I thought this site was about. People who have had experience sweating and bleeding for their DSM, troubleshooting problems that no one else knew the answers to and then relaying that experience to newer generations of tuners who are in this for the same reason... they know the secret... that DSM's simply put are the best damn cars ever built.
So why is it so hard then to get someone to even answer a post with an honest problem... is it because we must be newbies for having problems to begin with?? Should we be flamed for asking for advice? The fact of the matter is that A'PEXi S-AFC's are complicated frikin little devices, and unless you fully understand how to operate one you can seriously f*** up your DSM. So for everyone who reads this and doesnt have one... LandoAWD is right. If you dont have a datalogger... get one. I dont, and I will not install my S-AFC until I do.
Again... Thanks LandoAWD. Info like that is golden.

Oh God, I'm thrilled at this post. The point of questions like mine are just that, to take other instances when people were trying to tune from absolutely no information to base on. What I mean is that they're starting with their AFC zeroed out and go from there. Great, nothing wrong with that. Probably the best way to do it, but I'd rather try gathering others information and come up with an "average" when it comes to fuel correction numbers. Start from there, and then take over with tuning based on my logs.

it's hard to give advise sometimes. just the fact that every car is a little different makes it hard. i have the exact same setup as someone around here. he said he was at -10 on pump. i was at +7. i kept thinking i could get more power by leaning it out. not the case, all i got was knock. thank GOD i had a datalogger before i did this. there are so many variables involved that a person just has to know what the hell they are doing sometimes. this is kinda a flame job, but really we can't tune your car, and i don't know if we can really get you close. you just have to consider all the factors (injector size, fuel pump, fuel pressure, boost, mass, etc.) then figure it out. that will get you close. then go from there. also, you can't really get mad at people for not sharing what they know. they aren't getting paid for it. they do it just to be nice. when it came to tuning i didn't get any help either. the smart people are smart enough to know that they can't really help us. not without looking at the car personally anyway. thats just my own thoughts on this thread. so don't get mad at me dammit. i was there

I'm really sick of posts like this. In essence you're saying that this thread is pointless. We're getting other opinions and AFC settings to compare and contrast so we can better tune our own cars. I'm glad you and your friend's setups were very similar and your AFC settings very differen't, but not everyone's situation will be like that. If you don't agree with this thread then say goodbye, don't flame everyone else because you have a problem with it. :thumbdown