Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Old Dec 20, 2019 | 03:02 PM
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Default Mefi IV

I got a new LS6 / magnuson blower with a 1955 Chevy project.
Then engine is from 2008 never used and from TurnKeyEngine in Oceanside.
It comes with a Mefi IV computer but it feels like old school to use that today.
What’s your ideas before I start this engine, should I buy some other computer and do I need another connectors. I was thinking of some self learning system or shall keep the mefi? In that case What program is best to program the mefi IV?
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Old Dec 20, 2019 | 03:11 PM
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That set up will require some specific tuning for boost. In before someone else can say Holley....
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Old Dec 20, 2019 | 06:55 PM
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Originally Posted by Michael Yount
That set up will require some specific tuning for boost. In before someone else can say Holley....
How hard is MEFI IV to tune? I remember hearing about it a while back.
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Old Dec 20, 2019 | 08:26 PM
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I had to look up "MEFI" -- even then, I still don't know what it is. LOL! Some kind of factory ECU that you need HPTuners or some such to work it with? I don't know. But the answer is Holley I'm pretty sure....
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Old Dec 20, 2019 | 09:45 PM
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A common gm ecu used in marine or sand car applications. software is available . look @ mefiburn. Steve
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