So i'm running too rich...anyone familiar with how to use the SAFC to lean it out a little bit? My problem is under heavy throttle in 4th and 5th (more than 3/4 throttle) the car hesitates some and then backfires severely with a cloud of black smoke....i know it's way too rich...i just need help leaning it out with my SAFC...:( the only mod to the fuel system is a walboro 255..and then motor wise what you can see in the signature

thanks

do you have any sort of fuel pressure regulator?

do you have any idea at all how to use it?
the best way to tune it properly would be on a dyno with some sort of wideban 02