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ECM compatibility

sensabaugh1

New member
"We have an '02 4.3L MPI C

"We have an '02 4.3L MPI Chevy engine (app. 120 hours). This season it's developed intermittent issues--running rough, missing, low power, loss of throttle. We've replaced almost everything but the ECM. Has anyone had any luck with using an automotive ECM ($400) instead of the marine ECM ($1800)? Any input would be appreciated. Thanks."
 
Won't work - end result wi

Won't work - end result will be worst than your current description....the auto version "needs" an O2 sensor input whereas the current MEFI versions don't.
 
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