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MEFI 4B to AEM Infinity 3 Conversion

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MEFI 4B to AEM Infinity 3 Conversion

Old 01-09-2019, 07:32 AM
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Default MEFI 4B to AEM Infinity 3 Conversion

Well after fighting the MEFI for long enough , I am going to convert to an AEM Infinity 3 ECM with AEM's kit with plug n play harness .
Time to move forward in Technology!
Unless you have the Software from GM , its cumbersome at best tuning the MEFI. The Infinity Tuner is very intuitive and full featured .
It offers real time tuning with the option to save or revert . The tables have more resolution where its needed . Also does self learn with 2 Widebands .
Looking forward to dynoing this set up , I'll post results.
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Old 01-09-2019, 07:47 AM
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Would you be interested in selling you MEFI 4B Computers?
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Old 01-09-2019, 08:07 AM
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for 450 bucks per plug on play harness,,I'd be running a new harness or repin the mefi harness.but hey,let us know how turns out.
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Old 01-09-2019, 08:08 AM
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Are these ECM's supported in a marine application
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Old 01-10-2019, 06:43 AM
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The harness is alittle pricey , but its a time issue , customer wants the boat back to do more mods , or I would have built a harness. All in
I have less than 1600.00 in the ECM and Harness. They are Marine Rated , the molex connector on the ECM is the same style that Seadoo uses on there ECMs.
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Old 01-14-2019, 09:26 PM
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I have a mefi 4A ecm I'd sell and those AEM's are not holding up in the marine world.
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Old 06-16-2020, 12:59 PM
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Ever buy this and run it? Does it have provision for gm.flex fuel sensor, still planning my personal 13-1 548s for my boat (E-85)
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Old 06-16-2020, 03:24 PM
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Yes , It works great , the Harness is built by Alexi at boostpower. He uses the AEM ECU on all of his engines.
I have it on a customers 572 , 4.0 whippled engine . Tuning and Data AQ are really solid , its more engineering based and can get alittle complicated.
But he has over a 100 hrs on it. Yes it will do Flex fuel. It is used alot on E85 apps.
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