UltraTibby

Dude if you wouldn;t mind sending that bi@tch over to me too that would be great! Buying the SAFC2 in the next week and wont have time (or money) to dyno it right away....

wattsup4800

If you could
i also would need it
thanks

Agarwal

Guess who made that software back then... wink1.gif

I should still have the source somewhere; it's been a while since I've played with it. It DID have settings for both the SAFC and SAFC2, but the only difference was with the number of tune points.

I'll recompile it and host it somewhere tonight.

It won't do MUCH good to use the software, but you'll have a much better understanding of what's happening to the correction for certain settings; that's basically why I made the software in the first place, to help understand what's going on.

The stock ECU can correct fuel from -25% to + 25% by itself to achieve the programmed A/F, so it's kinda hard to do permanent dommage by tuning the SAFC... of course, if on your first try you put -50% all accross and you go for a ride with the pedal to the metal right away, you DESERVE to break your engine wink1.gif

This -25% to +25% correction is also the reason why the ECU tends to "learn" over the SAFC over time, in closed loop at least. Still have to do more tests in open loop. Anybody selling free time for cheap? wink1.gif

REDZMAN

Feel free to send it do Java too, we can get it hosted.

Agarwal

Here's my original release post, since I'm lazy and don't want to type it all again wink1.gif

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Hi,

I just finished a little piece of software which should be useful to people using an S-AFC (1st or 2nd gen). The software plot the 3D correction map of the S-AFC, which can help you tune your car by visually examining your settings. It gives you the correction % related to a certain RPM and Throttle. I personally think that this software should be very useful for tuning, if not necessary smile.gif But then again, I may be biased hehe...

The usefulness of this tool comes from the fact that the S-AFC is not *exactly* linear in it's correction % calculation; if the current throttle is BETWEEN the low and high throttle point, the correction % is a result of "how far" the current throttle is between the low and high throttle. Otherwise, when the throttle is lower or higher than the low or high throttle points, it just directly uses the related value in one of the 2 correction tables.

So, say your Low Throttle Point is 20% and your High Throttle Point is 80%. You are currently at 30% throttle. The value of the Low Throttle Table will have more "weight" than the one from the High Throttle Table, but both will still be used to calculate the correct correction %.

If you have the same Throttle Points but you are currently at 10% throttle, then the value will be directly taken in the Low Throttle Table. Same thing when your throttle is higher than 80%.

Since the whole thing is pretty hard to visualize and that one needs a perfect map to tune a car perfectly, I conceived this little software. Here's a screenshot:



You can zoom, move, change perspective, save the graph as an image.

You can also save your settings and open them later.

You'll need the Microsoft .NET Framework to use this software (sorry guys, I was lazy... wink1.gif ). You should already have it if you keep your computer updated through Windows Update.

Finally, here's the software:

S-AFC Correction map plotter (~400k)

Happy tuning!

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You'll probably get a nag screen after a couple of days telling that the map library (TeeChart.dll) evaluation period is over; just click OK, and it shouldn't cause the software to stop working.

TiburonWao

Agarwal
Ok... I have do the graphic with the plotter, but I need some advice about If my tuning is correct or not.... Can I email you so you can tell me If I'm wrong or not???

I save it in 2 JPEG drawings..

Excellent Program.... it help to understand a little more the Corrections of the SAFC

sharkev

Yeah I hve this program but, i still dont understand perfectly the way to do the settings.....

I put the settings and it show a grapich but how can I know that the settings are fine??..

why dont you share the setting to everybody can tell how are the diference between us...??

azwildfire

this might help

of course, i dont drive an RD but the methods still work tongue.gif

http://www.elantraxd.com/forums/showthread...46195#post46195

UltraTibby

From what I've found (I just bought one today) some of the base settings are:

Sensor Type: Hotwire
In: 01 Out: 01
TPS: Arrow pointing up and right

Besides that though we really need someone who is N/A to post up exactly what their settings are. Not that they would be perfect for all of our cars but atleast this way we have a base to run off of. Any takers?

TiburonWao

Ok.. I have a 1.8 DOHC MAP with the SAFC2..... I think that my car is runing a little rich.... But I just install the MSD DIS2 an my MilesxGalon get a improvement....

This are my settings right now.... But remember that I don't have any Air/Fuel gauge, O2 wideband or DYNO.....


Low Throtle point 30% High Throthle Point 70%

RPM Correction RPM Corrction
1000 -2 1000 -2
1600 -5 1600 -5
2200 -6 2200 -8
2800 -6 2800 -9
3400 -6 3400 -9
4000 -5 4000 -9
4600 -5 4600 -9
5200 -5 5200 -8
5800 -5 5800 -7
6400 -5 6400 -6
7000 -5 7000 -6
7600 -5 7600 -6


Remember that I'm trying to learn about this..... my car is going fine.... no problem at the moment.....

If anyone can help me to get a better (or a lot better graphic) I would be very happy

Thanks....