97 Ram dies when decelerating, but starts back up
I'm finishing up my winter project. I built a 97 1500 EC 4x4 with a 408 out of my rusty 94 Ram, 46RE trans, 241DLD and Dana 44/60 axle combo. The 97 came with a bad 5.2L. I have had it up and running around my shop and starts up every time with the key. I took it for a drive today and it stumbled a little when I got on the throttle. A mile down the road, I let off the throttle to make a right turn and the truck died. It fired right back up, but I don't remember if I pushed on gas pedal or not. I drove back a mile to the shop and it died again when making a turn. I will pull and clean IAC, but wondering if using the stock 5.2L ECM could cause this problem. I'm waiting for an SCT tune, but wanted to get a few easy miles on the truck to check over my work. I have 24# injectors and fuel pump pressure was at 45# when I first got the truck running. Thanks for any input.