I'm currently running your magnuson tune w/ the stock flex fuel pump & injectors, incorporated with the pressure switch that ties into the boost port & the high flow fuel pump relay. Let me first start off by saying that the thing RIPPPPS with that tune, the afr's from my wideband tell me its done well. However the bad part is that i have a transmission shift stutter from 2nd to 3rd and sometimes at part throttle in 5th gear, as do all of the other flex fuel guys that i know have the tune or your charger & tune. Is there any patch in the works for getting this remedied or is it something we are going to have to live with, i can't imagine that stutter is all that great on the health of the transmission or components. Please let me know what ya think.