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Old 10-28-2005, 05:52 PM   #1
elpapi336
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Impreza GC8 s-afc tuning on a 99rs-t

hey i need to know the tunning for the s-afc on my car to get it running until i get it tunne in a dyno wich will be like next month so i need some help now, like if any1 can post all the setting where is suppost to be at like how many % of fuel should i add in each rpm in the hi-thr n low-thro, like where all the setting supost to be at so i can run atleast safe for now i'm running oem wrx injectors n fuel pump, custom up n down pipe, oem sti exhaust, td04 turbo wrx intercooler, boosting 6psi and for some reason when i go on the highway n step on the gas for like a minute the a/f guage shows from rich going all the way to lean n then the light dissapears so guyz plzzzzzzzzz i need help!! anybody
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Old 10-28-2005, 07:18 PM   #2
CUNNINGHAM
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I hate to be the first to say it but tuning your car via the forum is hard. The mear fact that the different geological locations and altitudes will have a dramatic effect in tuning. What works for one may not work for you. Also the set up of the car has a big effect. I had very different settings than my buddie with almost identical settings. I would highly recomend a stand alone first off but let's see what we can do for you.

I have some questions I have in order to help get you started in the right direction:
What year car do you have and what engine?
What do you have your throttle activation points set at?
What are your tunning RPM's set at?
What size injectors do you have?
Where are you located?
Have you peformed the parallel fuel mod?
What air fuel ratio gauge do you have? If auto meter how many green bars do you light?
Are you getting any knock and do you have any device to know?
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Old 10-28-2005, 10:37 PM   #3
elpapi336
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is a stock 99 2.5rs engine
i don't know (how do i check that?)
i don't know
420cc stock wrx
rhode island
no
obx
no i don't have any device
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Old 10-29-2005, 07:51 AM   #4
elpapi336
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<img src="http://i5.photobucket.com/albums/y183/elpapi336/DSC01168.jpg" alt="Image hosted by Photobucket.com">
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Old 10-29-2005, 07:54 AM   #5
elpapi336
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Old 10-29-2005, 04:53 PM   #6
06STi
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Nice Car.....
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Old 10-29-2005, 04:59 PM   #7
no-coast-punk
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Do a search... I've written on exactly what is needed.
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Old 11-03-2005, 07:16 PM   #8
Mariano
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Hola,



Hope this helps a bit. Heres my current setting on my S-AFC. Remember that each Turbo setup is different; therefore each setting on the S-AFC will vary. Im enclosing my actual turbo setup so that you can compare it with yours.

***********

***********
S-AFC Settings:


1.-MONITOR:

Not Applicable (read only)



2.-SETTINGS:

1) HI:

1000 -2%
3000 -19%
3500 -24%
4000 -26%
4500 -28%
5000 -26%
6000 -22%
6500 -18%

2) LO:

1000 +10%
3000 -12%
3500 -14%
4000 -15%
4500 -16%
5000 -14%
6000 -12%
6500 -10%

3) TH POINT:

a) LO: 20%
b) HI: 55%


4) NE POINTS:

1000
3000
3500
4000
4500
5000
6000
6500

5) DEC. AIR:

a) THR: 2.0%
b) NE1: 7.0%
c) NE2: 2.0%

3.- ETC



1) Sensor Type:
a) Hot Wire >>> 01(in) & 01(out)

2) Car Select:
a) 4 Cylinder

3) Graph Scale:
a) PR: 760mmHg
b) NE: 7000 rpm
c) CR: 3%



Start setting your S-AFC with item 3.- ETC. Its basically a standard for all MAF (flow meter) equipped Imprezas. The proceed with item 2.-Settings; starting with sub items 3,4 & 5.
Pd. - My setup (but just the relevant parts ):


-Garrett GT28R
-Supra TT fuel pump
-Vortech FPR (10:1)
-Spearco TMIC
-Greddy BOV (Type S)
-WRX injectors
-Apexi ITC
-Apexi S-AFC (DOH!)
-Apexi AVC-R
-Apexi Voltage Regulator
-NGK Iridium spark plugs (BKR7Eix-11)
-Unorthodox Racing underdrive pulley
-Custom turbo manifold/uppipe/downpipe (3.5")
-Custom 3" piping (catless)
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Old 11-03-2005, 07:26 PM   #9
CUNNINGHAM
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I have to add a bit of caution here. As he is running a 10:1 FMU. Which will cause him to run more fuel than you will. This is causing him to have to lean his car out a bit. Not to mention he is in P.R.
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Old 11-03-2005, 07:29 PM   #10
Stealth_RS
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I want boost!!

What up PUERTO RICO
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Old 11-03-2005, 08:38 PM   #11
elpapi336
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hey mariano do you have the b.o.v outgoing air going back to your intake pipe or just out to the open? i heard that it does affect the maf reading
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Old 11-03-2005, 09:00 PM   #12
CUNNINGHAM
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I had a MAF with a atmospheric BOV. It does effect fuel, MAF are good when installing a turbo on a N/A car. The MAF calculates the correct amount of fuel bassed on how much air that passes throught it by monitoring how much voltage is need to keep the element at a set temp. So when you release the throttle the car has already calculated the correct amount of fuel needed for the air that has passed by. You then release the air to the atmosphere and the car runs a extreme rich condition causing cylinder wash and out of round. It also will cause the car to stall. This is way you need to use the decell function on the AFC.
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Old 11-04-2005, 05:32 PM   #13
elpapi336
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oh for real Doug?? well do u think it'll be better if i go with a stock b.o.v so i can put the release air back to the intake??
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Old 11-04-2005, 06:31 PM   #14
CUNNINGHAM
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What's up! It wouldn't be a bad idea. I had mine piped back in till I installed a stand alone.
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Old 11-05-2005, 02:41 AM   #15
elpapi336
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but will it affect anything on my car right now like is it hurting in anysense on my car right now???
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Old 11-05-2005, 07:25 AM   #16
CUNNINGHAM
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Well it is causing some long term damage. What happens when you run very rich like that, the cylinder temp is about 4500 degrees when the piston fires you then lose 1500 to the rings which then transfur it to your cooling sys. the piston obsorbs 1500 and the exhaust takes about 1500, so everthing ends up around 1500 you then splash it with a large amount of colder fuel whoch will wash the oil off the cylinder aqnd back into the pan, now you have put fuel into the oil system which thins it out. At the same time you have shot cold fuel at extremely hot cylinders which cause them to contract instantly cause the to deform a little at a time, this is when the cylinder becomes out of round (egg shapped). All the things combined will decrease the life of the engine which on a boosted N/A engine I don't think I would want anymore trouble than I already have.
I would recomend a stand alone.
You have my number call me I would love to help.
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Old 11-06-2005, 03:11 AM   #17
elpapi336
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damn man that's gonna suck uh? well i def. need a standalone but what kind is good? linkplus? and where can i get them?
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Old 11-06-2005, 06:15 AM   #18
CUNNINGHAM
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The link plus is good I have heard great things about the hydra. I have the microtech I love it. Their are cheaper solutions you could get a mega-squirt I have used one in the past it's about 350.00. The even sell kits that you build yourself. I will get you some info later I have to go.
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Old 11-06-2005, 09:44 AM   #19
elpapi336
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mega-squirt?? will it be able to run a sti block with that ecu? and which microtech will i need lt-8 or mt-4? i would like to have a ecu that will be usefull when i swap a sti block into my car
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Old 11-06-2005, 11:57 AM   #20
CUNNINGHAM
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I have the LT-8 you will be able to run a swap with that unit. Take a look at the megasquirt, http://www.megasquirt.info If you are going to do a swap in the near future then I would just wait and get the Turbo XS unit when I did the swap. The microtech LT-8 can be used with the factory ECU completely removed from the car as I have done it, I have no OBDII system, emissions or idle control. So the car fails RISI. Just what I need to get the job done. These are some things to think about. We should get together and talk in person. It is hard to explain all the verables over the computer.
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Old 11-06-2005, 08:41 PM   #21
elpapi336
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ok kool men let me give you a call later
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