Have a 97 E40D 7.3 with a TS 6 position chip on the truck. Disconnected my batteries to do glow plugs the other day and after I hooked the batteries back up the truck will stall at WOT in 1st and it's done so a few times while even going from 20-30 mph. No lights or codes. Already done the UHVC last winter. Not sure if it's trying to figure out fuel trims or a possible bad MAP sensor.