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Old 04-19-2017, 09:04 PM   #6
bobxyz
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Join Date: Aug 2014
Location: Boulder, Colorado
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You need to somehow get your old distributor out and replace it with a LH2.2 distributor that's already "locked down" from the factory. MegaSquirt does not have any sort of anti-advance tables to counteract any vacuum or rpm advance built into the distributor.

Also, someone else on here posted .msq's for a basic LH2.2 disti setup. I think they eventually were able to use "Trigger Return" mode -- this mode uses one edge of the crank sensor (in disti) to trigger spark immediately during cranking, and the earlier edge to allow adjustable MS advance during running. IIRC this was partly documented on diyautotune's website for a Volvo 240 install.
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