The dyno is new ... for reasons unknown the A/F jumped to 18:1 on my first run. I thought my engine was going to EXPLODE ... The person in the passenger seat was monitoring my AEM Wideband (its new) and it read 11.5 the entire time.
In my opinion the sensor on this dyno is suspect. I'll probably add a little more fuel in the 2.5 - 3.5 k RPM range to level out that hump though.