I have a 2010 with a newly installed Pro charger. During a couple quick shake down runs, i noticed a quick jump in AFRs when transitioning from part to full throttle. When rolling on from 2500-3000ish they will jump to mid 15's and quickly settle back down to a much richer condition under WOT. I assume this may just be a momentary condition as the fueling catches up the demand, or even just the delay coming out of a closed fueling loop. Anybody else see similar AFR's when transitioning...

Procharged 2010 AFR's