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Old 08-30-2020, 11:25 AM   #17
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Join Date: Aug 2014
Location: Boulder CO

To drop the LH2.4 MAF voltage, you can just use a 2 resistor divider. I'd try a total resistance around 50K to keep the load on the MAF low.

Your bigger problem is that LH2.4 uses a hot-wire MAF that needs an occasional burn-off cycle. I don't know how you'll do this with megasquirt. It would be easier to find a more modern thin-film MAF that doesn't need a burn-off cycle, preferably one with a good MS calibration chart already available. (I think ipdown still has partial datasheets for the 012 and 016 AMMs.) Or just use MAP like everyone else suggests.
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