want to run leaner

[mightymousestd]

This craziness has to end...with my car running so rich in the face of all the mods I've done I have almost gone mad...my list of updates to come is a 60mm tb, 255 walbro pump, and a 12.1 fmu before turbo but the way my car is running now is killing me. I don't have a wideban yet, but I plan to get one here within the near future so I was wondering what s-afc works best out of those that are out there 'cause I need something to lean this crap out before I add more fuel to it...I venture to think that the bigger tb will help lean it out, but not enough to run the upgraded fuel...please help...I just wanna be faster, is that such a crime???

 

[mightymousestd]

I found a wideband o2 sensor thing that aem makes with an output for the pcm...can I use that to tune the air/fuel ratio? or should I just get an dmm on the voltage from the o2 sensor and get a S-AFC to tune it using the voltage measured from the os sensor? the S-AFC and the wideband both are about the same price and I was wondering if the wideband would work just as well to tune the idle as the S-AFC, but the S-AFC (if can tune off of the voltage) would be more precise thruout the rpm range... opinions..?

http://www.aempower.com/product_ems.asp the Gauge-Type Wideband UEGO Controller a little down the page

 

[92awdgsx]

You can't control feul with a wide band, its only for monitoring the a/f ratio. With an S-AFC you can change the amount of feul being put in the motor.

 

[95blackGsTurbo]

I would go with an SAFC2 if I were you. Get a fuel pressure regulator and a datalogger as well. If will help you monitor your o2 sensor voltage and by reading that you will be able to tell what you are running A/F wise. Great tool to get for any car.

 

[mightymousestd]

are you talking about the apexi SAFC2? do I really need a wideband though?