Hey my buddy has a 2003 5.7 with a mefi-4 that has gone kaput, does anyone have one or does anybody rebuild them, the numbers on back are 12584052 and 864052ka61350064, thanks let me know

Just gave this guys info out to another looking for MEFI4B help. Maic fixed several of my 12584052 ECUs. He charges the going rate and fixed each one I sent to him. He does not reprogram or tune them. Big thing is no BS and Fast, like a week fast from my hands to back into my hands. He even makes a video to watch and see your unit working before sending it back to you. He does not have replacement units but you can ask.

He does repair a lot of ECUs from different manufactures and MEFIs is just one that he works on.

Maic Salazar is the reapair Guy. He is in Virginia 20171
www.maicsalazardiagnostics.com

Hey thanks a lot appreciate the info will send it off