98 Sebring stalls and misfires

I have 98 Sebring that stalls at intersections and sometimes when slowing to make a turn. Codes said misfire on 2 cylinders. I replaced the plugs and plug wires / no help. Took into a shop and they said ECM needs to be repalced recommended take it to the dealer. The dealer wants $500. I can replace the ECM myself for a lot less but want to be sure before spending the bucks.

Working on one for my daughter doing the same thing. Replaced many parts, crank position sensor, TPS, MAP sensor, plug wires. Finally got a code that says EGR system leak large. I would check there first.