anyone know how to tune s-afc II

subiebill · 01-26-2004, 11:09 PM

I went to have the car tested because the check engine light was on and the car keeps stalling. The outcome after being tested was that the car's air flow Need some expertise on the s-afc II and how to tune now that everything is installed. It started happening more often when I put the blitz sus air intake on and now even more after I put on the borla catback. Anybody have any thoughts about this.

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MB38 · 01-26-2004, 11:14 PM

I'm curious, why did you go for the AFC rather than a proper tuning/reflash?

subiebill · 01-26-2004, 11:21 PM

I have had the s-afc II since I had my 2001 RS so when I purchased the wrx I installed the afc before I started installing the intake and the exhaust and I am a noob with the wrx so I appreciate any help on this, thanks.

wRx14pSi · 01-26-2004, 11:45 PM

perhaps a message forum isnt the best way to tune the safc 1 or 2. try to find someone local with knowledge. its really hard to say what your values should be set at. since maby thing like ambient temp, air, fuel, etc..

try resetting your ecu see if that helps a bit

MB38 · 01-26-2004, 11:48 PM

subie, I didn't mean for the post to sound offensive, don't worry about it.

It would be best to take it somewhere and have it tuned (which will probably cost just as much as a reflash would). It's a difficult still to acquire.

subiebill · 01-26-2004, 11:59 PM

I am not taking any offense to it I am just frustrated with the rough idle and the constant stalling. So hopefully someone would be able to help me out and figure out how to set this where i am lost with that and I appreciate your suggestion.

thanks

angryfist · 01-27-2004, 11:20 AM

are you sure all your settings are correct? double check those before anyhting. it should not be idling rough at all and definitly not stalling. also, what mods do you have?

wRx14pSi · 01-27-2004, 11:27 AM

Settin 2 Hi low throttle shoudl be 10% and 70%

Setting 3 Hotwire ---> 1 to 1
car 4 cyclinder with arrow up

this should provide smooth idol

Quote:

Originally posted by MB38
subie, I didn't mean for the post to sound offensive, don't worry about it.

It would be best to take it somewhere and have it tuned (which will probably cost just as much as a reflash would). It's a difficult still to acquire.

On the contrary in the northeast .. www.turbotrix.com will dyno tune your SAFC if you book 1 hour of dyno time.. well below the 200 dollar mark..

subiebill · 01-27-2004, 11:42 AM

the mods would include blitz bov, blitz sus intake, and the borla exhaust. The rough idling kept getting worse when I started putting more mods on the car. Any ideas on that. I will call up turbotrix and see what they think and if it needs to be dynoed I will setup an appointment with them. Thanks guys.

subiebill · 01-27-2004, 11:43 AM

forgot to mention s-afcII and rsm on the list of mods as far as electronics and engine parts go

angryfist · 01-27-2004, 04:45 PM

you should be at hotwire 20/20 not 1/1. with that few mods you should definitly not be idling bad. i would take out the safc and see if the idle smoothes out. or you can jsut unplug it and stick a wire from yellow to white to connect the maf wires and turn the car on. if this does not work then there is something else wrong with your car.

also make sure your a/f correction settings are all at zero.

CatchME · 01-27-2004, 05:11 PM

You can't tune it untill you put it on a dyno with a wideband or get some kind of 0bd2 data logger (www.pocketlogger.com). Try putting your LO values a few into the positive - that should give you a bit higher idle or you can just take that intake off considering all it does is confuse you MAF - or you could check for vacum leaks in the intake area

. Anyways, here are some very useful SAFC tuning guides:
http://home.comcast.net/~tarryo/kyle/tuning.html
http://www.roadraceengineering.com/newafc-print.htm

And incase you have access to a pocketlogger:
*keep in mind the guide is for a dsm but it will give you an idea of how use one*
http://www.vfaq.com/TMO/Tuning-Tips.htm
http://hywell.org/plhelp/data.html

Good luck, Zach

subiebill · 01-28-2004, 08:52 AM

thanks, i am gonna try tuning the afc at work today and see how that goes and then if that doesn't work i will play around with the maf sensor and if that doesn't work i will take off the blitz intake and put the stock intake back on

wRx14pSi · 01-28-2004, 09:07 AM

also take a voltage meter and see if the maf sensor is good or if the TPS sensor is good.

01-26-2004, 11:09 PM	#1
subiebill Scooby Specialist Member#: 24931 Join Date: Sep 2002 Location: Glenwood NJ Vehicle: 2002 WRX Black	anyone know how to tune s-afc II I went to have the car tested because the check engine light was on and the car keeps stalling. The outcome after being tested was that the car's air flow Need some expertise on the s-afc II and how to tune now that everything is installed. It started happening more often when I put the blitz sus air intake on and now even more after I put on the borla catback. Anybody have any thoughts about this. * Registered users of the site do not see these ads.

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01-26-2004, 11:14 PM	#2
MB38 Scooby Specialist Member#: 51588 Join Date: Dec 2003 Chapter/Region: SCIC Location: Burbank, CA Vehicle: 2006 WRX TR 1997 Supra Turbo	I'm curious, why did you go for the AFC rather than a proper tuning/reflash?

01-26-2004, 11:21 PM	#3
subiebill Scooby Specialist Member#: 24931 Join Date: Sep 2002 Location: Glenwood NJ Vehicle: 2002 WRX Black	I have had the s-afc II since I had my 2001 RS so when I purchased the wrx I installed the afc before I started installing the intake and the exhaust and I am a noob with the wrx so I appreciate any help on this, thanks.

01-26-2004, 11:45 PM	#4
wRx14pSi Scooby Specialist Member#: 6203 Join Date: Apr 2001 Location: Tri-State (NY)	perhaps a message forum isnt the best way to tune the safc 1 or 2. try to find someone local with knowledge. its really hard to say what your values should be set at. since maby thing like ambient temp, air, fuel, etc.. try resetting your ecu see if that helps a bit

01-26-2004, 11:48 PM	#5
MB38 Scooby Specialist Member#: 51588 Join Date: Dec 2003 Chapter/Region: SCIC Location: Burbank, CA Vehicle: 2006 WRX TR 1997 Supra Turbo	subie, I didn't mean for the post to sound offensive, don't worry about it. It would be best to take it somewhere and have it tuned (which will probably cost just as much as a reflash would). It's a difficult still to acquire.

01-26-2004, 11:59 PM	#6
subiebill Scooby Specialist Member#: 24931 Join Date: Sep 2002 Location: Glenwood NJ Vehicle: 2002 WRX Black	I am not taking any offense to it I am just frustrated with the rough idle and the constant stalling. So hopefully someone would be able to help me out and figure out how to set this where i am lost with that and I appreciate your suggestion. thanks

01-27-2004, 11:20 AM	#7
angryfist Scooby Specialist Member#: 22760 Join Date: Aug 2002 Chapter/Region: MWSOC Location: Troy, MI Vehicle: #54 STR S2000 crazymonkeyracing	are you sure all your settings are correct? double check those before anyhting. it should not be idling rough at all and definitly not stalling. also, what mods do you have?

01-27-2004, 11:42 AM	#9
subiebill Scooby Specialist Member#: 24931 Join Date: Sep 2002 Location: Glenwood NJ Vehicle: 2002 WRX Black	the mods would include blitz bov, blitz sus intake, and the borla exhaust. The rough idling kept getting worse when I started putting more mods on the car. Any ideas on that. I will call up turbotrix and see what they think and if it needs to be dynoed I will setup an appointment with them. Thanks guys.

01-27-2004, 11:43 AM	#10
subiebill Scooby Specialist Member#: 24931 Join Date: Sep 2002 Location: Glenwood NJ Vehicle: 2002 WRX Black	forgot to mention s-afcII and rsm on the list of mods as far as electronics and engine parts go

01-27-2004, 04:45 PM	#11
angryfist Scooby Specialist Member#: 22760 Join Date: Aug 2002 Chapter/Region: MWSOC Location: Troy, MI Vehicle: #54 STR S2000 crazymonkeyracing	you should be at hotwire 20/20 not 1/1. with that few mods you should definitly not be idling bad. i would take out the safc and see if the idle smoothes out. or you can jsut unplug it and stick a wire from yellow to white to connect the maf wires and turn the car on. if this does not work then there is something else wrong with your car. also make sure your a/f correction settings are all at zero.

01-27-2004, 05:11 PM	#12
CatchME Scooby Newbie Member#: 22732 Join Date: Aug 2002 Location: Kingston, MA	You can't tune it untill you put it on a dyno with a wideband or get some kind of 0bd2 data logger (www.pocketlogger.com). Try putting your LO values a few into the positive - that should give you a bit higher idle or you can just take that intake off considering all it does is confuse you MAF - or you could check for vacum leaks in the intake area . Anyways, here are some very useful SAFC tuning guides: http://home.comcast.net/~tarryo/kyle/tuning.html http://www.roadraceengineering.com/newafc-print.htm And incase you have access to a pocketlogger: keep in mind the guide is for a dsm but it will give you an idea of how use one http://www.vfaq.com/TMO/Tuning-Tips.htm http://hywell.org/plhelp/data.html Good luck, Zach

01-28-2004, 08:52 AM	#13
subiebill Scooby Specialist Member#: 24931 Join Date: Sep 2002 Location: Glenwood NJ Vehicle: 2002 WRX Black	thanks, i am gonna try tuning the afc at work today and see how that goes and then if that doesn't work i will play around with the maf sensor and if that doesn't work i will take off the blitz intake and put the stock intake back on

01-28-2004, 09:07 AM	#14
wRx14pSi Scooby Specialist Member#: 6203 Join Date: Apr 2001 Location: Tri-State (NY)	also take a voltage meter and see if the maf sensor is good or if the TPS sensor is good.