VEMS for Motronic Harness

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  • Billman
    S2Forum Freak
    • Nov 2004
    • 4129

    #1

    VEMS for Motronic Harness

    Hi, i am thinking since long time ago about it. What do you think about a Group buy. It is not only the Price but also the Support that we could give to eachother.



    Cheers,

    Vasilis
    Go Holset or Go RS4
  • Billman
    S2Forum Freak
    • Nov 2004
    • 4129

    #2
    Some Text from the VEMS Page:

    " The Audi AAN (same pinout as the ABY / ADU) and the Audi 3B were the first applications (note that 3B has different pinout). These use special "auditrigger" 3 sensor trigger system with the 135 tooth flywheel teeth VR, crankhome-VR and cam-HALL sensor. The factory MAT (manifold air temperature)-sensor is PTC type, so 430 Ohm pullup resistor is used for better precision.
    Bosch made many motronic ECU-s with this connector, but different (incompatible!) pinout.
    A few other engines, mostly BMW and Porsche (usually with 60-2 crankwheel VR sensor) were tested with harness-adapter loom (with standard Econoseal36+18 VEMS and adapter outside). If you have such an engine, make your project page(s) from wiki MembersPage so we can verify the application, pinout and other aspects.

    * the default 400kPa MAP sensor is a good choice, but if you want other type of MAP sensor (none / 115kPa / 250 kPa / 300 kPa) than write on your wiki MembersPage, and paste the link in the order note.
    * as the factory setups have no WBO2 (Bosch LSU4 wideband sensor), and WBO2 needs min 4 signals between ECU and sensor (the sensor has a 5th pin for supply and 6th pin that need not be used if the more precise software adjustable calibration scheme is used), a few wires must be used for WBO2. It is often simplest to pull in a few wires in protecting tube to the cabin, while others prefer to hijack some non-used wires (like the MAF-wires, when they throw out the MAF sensor)."
    Go Holset or Go RS4

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