No zero driveability issues running at 16.0:1 to 16.3:1. No extra heat either. But the car has never had a issue with that even with the cummins i/c in front of the rad. Yes I am running a custom cal that ignores the O2 during boost.GLHNSLH2: Great mpg results! I would be interested in putting in a wideband even if it were just for the mpg benefits.
Have you had any drivability issues running leaner?
Have you noticed any excess engine heat running leaner?
Sorry if I asked this before, but were you using a custom calibration to force the ECU to ignore the oxygen sensor during boost?
Was your jeep running richer than 14.7 because the NB 02 sensor wasn't reading accurately, or is that in the programming of the ECU?