Dont even think for a second that a guage Air/Fuel in a pod is any good. It's been shown over and over that the Autometer and other narrowbands are completely useless when compared to wideband o2's on a dyno. Like I said before, stop playing around and go to a dyno. That Air fuel guage's price with install was all the money you needed to get your first hour of REAL dyno time. After which you wouldnt have to touch the SAFC again.

The only other REAL option is the AEM In-car-Wideband, but its about $600.... Still with a bit of innacuracies all its own.