The Zfuel thread was getting kinda long, so I thought I would start a fresh one along with the new update. The original thread is here: http://www.classiczcars.com/forums/fuel-injection-s30/49964-zfuel.html Well, today the HellFire ECU ran my Z quite nicely using 100% stock components (including cold start valve) & of course the stock AFM. It started and was very rich, which I did expect as I just had guesses in for AFM calibration. I tweaked the numbers and brought the pulsewidth down and