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Safc 2

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96eclipsegsx56

10+ Year Contributor
147
1
Mar 11, 2011
lowellville, Ohio
I recently bought a 1995 Eagle Talon TSI with a rebuilt 6 bolt bottom end and a 7 bolt head...i have a safc 2 tuner and was hoping someone can help me set all my points right? it has points set to it before i bought the car from the previous person just was wondering what is right % for LO throttle and HI throttle...and at which rpms add or subtract? and is -% taking fuel away?
 
What size injectors do you have? Do you have a wideband o2 sensor. IF you are on stock injectors and don't have a wideband than you do not need an safc, it will likely make your car run worse tuning it blindly.
 
I am currently in the same situation, I have bought a 1995 talon tsi awd. It already had a safc 2 in it, with procomp gauges. The air fuel ratio gauge fluxuates from rich to lean almost constintly. Maybe a bad gauge or could it be the safc? Help please.
 
^ That's because it's a narrowband gauge. The fluctuation is normal, but you need to know your actual A/F ratio, not just Rich, Lean, and Stoich like the narrowband tells you.
 
The back and forth back and forth on the AFR gauge is normal. It would be more better if you get a wideband properly installed. To set up SAFC2 I'm quite certain you select 2 cylinder engine on set up (this is because the coil pack splits in half) don't %100 qote me on that but I'm quite certain that's how it works, been years since I had to play with one. I know there's 2 maps, a low throttle map and a high. You can select what throttle postion you want it to engauge the 2 differant maps. For low throttle map set it to, oh, say, %55 TP, the next map "high trottle map" set it to %56. Don't have those two settings seperated by a gap. Make those 2 switch over points right next to one another like low map is 50%TPS and the next map is 51%

Adding air flow correction in the minus direction fools the mass air flow sensor into seeing "less air" and there for fuel injection is less. If you add correction in the plus direction you fool the mass air flow sensor into seeing. More air therefore the fuel delivery is more.

Go to the official apexi webpage, you can down load the instruction manual for free. Its SUPER DUPER thick of a book, print it and it'll be like 90pages long. Print the instruction manual and staple it together like a book and read the whole thing. It will make more sense if you read apexi instructions. Don't be lazy guys. Print it and read it
 
Take the difference of the injector and start there... so 450/xxx -1 then times by 100. That gives you at least a baseline percentage of where to start a tune. For example: (450/660-1) x100= -31.8% difference in injector size.

From there you need a wideband at minimum, a logger is even better... but for what its worth, I don't have a logger.... I am about to pull the trigger on link though within a couple weeks.
 
I have downloaded the full apexi 2 guide off on my phone, but what should my high and low be exactly? And I have manual boost control, I believe. The boost gauge reads 10 when in boost. Is that what this car should be running? New to this.
 
I bought a 97' with a safc in it it ran like butthole, so I took it off and re ran the stock MAF wire back up to the ECU now it runs great I'd advise getting link and selling that safc I sold two for $100 a piece..
 
The back and forth back and forth on the AFR gauge is normal. It would be more better if you get a wideband properly installed. To set up SAFC2 I'm quite certain you select 2 cylinder engine on set up (this is because the coil pack splits in half) don't %100 qote me on that but I'm quite certain that's how it works, been years since I had to play with one. I know there's 2 maps, a low throttle map and a high. You can select what throttle postion you want it to engauge the 2 differant maps. For low throttle map set it to, oh, say, %55 TP, the next map "high trottle map" set it to %56. Don't have those two settings seperated by a gap. Make those 2 switch over points right next to one another like low map is 50%TPS and the next map is 51%

Adding air flow correction in the minus direction fools the mass air flow sensor into seeing "less air" and there for fuel injection is less. If you add correction in the plus direction you fool the mass air flow sensor into seeing. More air therefore the fuel delivery is more.

Go to the official apexi webpage, you can down load the instruction manual for free. Its SUPER DUPER thick of a book, print it and it'll be like 90pages long. Print the instruction manual and staple it together like a book and read the whole thing. It will make more sense if you read apexi instructions. Don't be lazy guys. Print it and read it

You only want to gap the Hi/LOW throttle settings by 1% (example: Low 50% - Hight 51%) if your wiring in a pressure sensor and running the SAFC off of a boost reading instead of throttle position. Otherwise this is pretty far off from the way to do it for a DSM.


This is how i set mine up and have had really good luck with it so far.
 
If you have never set up your safc2 there is alot of YouTube videos that show you how and where to start with the settings. But to answer your questions I don't think there's software for it pretty much play with the settings till you get your afr's in scale.
 
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