I've been using a SMEC v19.3 BoostButton tune on my 1989 Daytona with the narrowband as the O2 sensor. It idled at 14.7 almost on the dot.

Well recently I turned on the WB2NB setting, scaled it to my AEM 0-5v 10-20 AFR gauge (Double checked with Aries' post here) and got MPScan and the physical AFR gauge reading the exact same thing. However, I'm running into an issue where the AFR is sitting about 11.5:1 - 12.5:1.

Don't mind the baro gauge, I was just flipping through gauges and clicked on that one by accident.

You'll see the AFR being commanded is 14.7ish and what's actually being read is 11.6, which is accurate based on the O2V. You can see the scale for my gauge on page 5 of this document:
https://www.aemintakes.com/instructi...-4100_inst.pdf



I was looking around on the forums and about the only thing I could find was this, where some one has the EXACT same issue as I do:
http://www.turbo-mopar.com/forums/sh...=1#post1091717

Possibility it's a bug with the tune? Any help is appreciated.