93 Integra LS Turbo Apexi VAFC Q's?

T3GRA

New Member
Ok I have a 93 Integra LS non VTech with a Garrett t3/t4 50 trim turbo, 370cc injectors, missing link, and the Apexi VAFC I believe it is the first model Apexi... no part number on it. motor is basically stock. Im trying to figure out how to use the VAFC I figured out how to set up the sensor type and the basic things but I haven't figured out how to use the wide and narrow throttle set points, I think - is less fuel and + is more fuel right? I don't know if anyone has 370 injectors that could give me a good base point to start with... I set my narrow throttle points 1000-5000rpm at -13 and it seemed to run smother and idle better and doesn't bog as much anymore, but I don't want to go any further because I don't want it to run lean, I have wide throttle set a 0 across the board.. any help would be greatly appreciated.
 

Muckman

Not a M0derator
First its VTEC, no H, If you own a Honda you need to know this.

Second, yes - means less fuel and + means more fuel.

Third, you need a wideband O2 sensor to tune fuel. Otherwise you are simply guessing and you will have a bad time. AEM makes a decent wdieband.

Also, I would recommend you retard your distributor all the way (rotate it towards front of car) to be safe.
 


T3GRA

New Member
My fault on the Vtec lol Timing has been retarded.. Do i need anything more then just the 02 sensor? Thanks Muckman for being so fast with the replies. Sorry im a novice when it comes to turbo cars, this is my first turbo car so im still in the process of learning lol when i get the ecu socketed for the s300, do you know of a good place to take it or send it down here in VA? I want things to be done right when the car is finished.
 

Muckman

Not a M0derator
Correct all you need is a wideband to tune fuel. Once you get it hooked up you can street tune your fuel and not be clueless about your AFC changes. I would recommend you skip the AFC and go right to the chipped Ecu. There are cheaper alternatives to S300 like Crome if you buy a chip burner/emulator. Its a million times better than the AFC.

I know RameyBuilt.com is in VA beach
 


T3GRA

New Member
The main reason im using the AFC is because it was already installed in the DA when i bought it. I just havent had the time to have the Hondata installed and tuned. I will get the wideband asap, when i get it what ratio am i looking for when street tuning?
 

T3GRA

New Member
Okay so it's been awhile since I have posted on here, but I finally got the AEM wideband installed, I have been playing around with the VAFC a lot but I'm unable to adjust anything but idle AFR I got my idle AFR at 14.3-14.7 under medium throttle the ECU controls the AFR from what I understand so it's pointless to try to adjust that, but when I'm under WOT my AFR is at 10.0-10.3, and it doesn't matter how much I adjust the wide throttle settings it does not change anything... can anybody tell me why I can't adjust my WOT AFR?? Any help is appreciated.
 

Muckman

Not a M0derator
No, Ive never used one before. Perhaps its not wired correctly or setup correctly in the software. I would think if you could change the fuel in one location that you should be able to do the same everywhere. Do you have a manual that you can consult?
 

T3GRA

New Member
I'm sure I can find one online somewhere, it would make sense that if I can change idle that I should be able to change WOT... would be nice if I had money, so I could ditch the VAFC and go hondata, for now I have to work with what I have. Atleast my car isn't running lean at all :) anybody else have some input?
 


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