In march i repowered my 1999 ebbtide from a 5.0L tbi to a 5.7l tbi.I purchased the engine from michigan motorz and they sent the ecm to marine power in louisanna to have reprogramed .the problem was that one of the two dropped the ball, because marine power can only reprogram to gm specs and the computer was programed to mercruiser specs.I was told they both do it differnet. It would not do anything when hooked up.So michigan motorz sent it to someone else that said they could do it.it now has 5 volt refence signals ,but no signal to the coil or injectors.My question is it really possible to reprogram the mefi 3 to mercruiser specs and if so does anyone know someone who can.
wildcoby

I know AZ Speed and Marine can do it. I hate to pimp them after all the times they f-ed up my boat but I'm sure they are condifent enough to put a stock Merc. program back in that ecu.

I also have had Arizona speed reprogram ecms for me

Precision Marine
Kenner, LA
Mark Boos


Tyler Crocket


I have used both and both know their stuff and will give you an honest answer and good service.

Tyler Crocket did mine and he is in Michigan
Don

Precision Marine did mine give them a call 504-469-7463

Good luck