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Summary of change:
Information on the Toyota 4age timing system - distributor driven. These have a potential market for Corolla (AE86 and newer, and MR2) http://www.autoshop101.com/forms/h23.pdf Some decent scope traces. http://www.jamesmccombe.com/tube/Cars/MR2/ImageLibrary/Thumbnails/Drivetrain/EngineManagement/DistributorTesting/ContactSheet.shtml Sounds like a simple setup: * LM1815 for primary trigger * LM1815 for secondary trigger This way we get a similar crank and crank-signal pulses to the processor as the HALL signal of the mazda-BP engine (eg. MembersPage/Fero ) has by default (without LM1815 of course). Any info about the position of primary trigger falling edge ? If it's >50 crankdegrees BTDC, than it is supported without any firmware modification.
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