Audi 5Cyl MS3 Sync Loss Issue

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Audi 5Cyl MS3 Sync Loss Issue

Postby dochka » Fri Dec 29, 2017 6:37 am

Having difficulties running a MS3+MS3X on a Audi S2 5Cyl engine;
Triggers are Crank wheel 60-2 & Cam Distributor 1 tooth
I've installed MS3+MS3X on 2 previous same cars with no issues at all, both of them running full sequential fuel + ignition (5 coil on plug setup).
The problem is that the engine starts but then i get sync loss @ 1100 rpm and no matter what i dowith the pots, or by changing polarity, configuration settings, the sync loss persists...
I've even tried 2 Megasquirt units, changed a bunch of crank sensors, switched from flywheel driven 60-2 trigger wheel from a VW Polo 1.4L to a front mounted 60-2 crank trigger, same issue so far
Tried a 1K resistor in the v3.0 pcb, tried adding a 10k on line 24, all the same
Right 2017-12-29_15.36.28.msq
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Re: Audi 5Cyl MS3 Sync Loss Issue

Postby Matt Cramer » Fri Dec 29, 2017 7:04 am

It seems to not be detecting real teeth. First, try turning off noise filtering to be sure the noise filter isn't being too aggressive.
Matt Cramer
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