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Megasquirt MS3X M20 LS1 COP Help!

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    Megasquirt MS3X M20 LS1 COP Help!

    I've recently setup my ms3x with a single tooth m50 cam sensor and 6x LS1 coils and when I test them in spark test mode they all fire but when I start to turn over the car nothing happens. There is no sync loss, I have rpm, full sync, nothing seems to be an issue. I get fuel but no spark. I'm running 42lb injectors with the standard injector wiring on the ms3 with 1-3 on bank 1 and 4-6 on bank 2. I get fuel but no spark when I turn it over.

    If anyone can chime in who have setup ms3x with LS1 coil on plug for an m20 please help me out. I'm pulling my hair out and I don't have much left 😂

    [Settings: ]

    Engine Seq
    ------------------
    2500cc
    42lb
    14.7 AFR
    Speed Densort
    1 squirt per cycle
    Four stroke
    6cyl
    Even fire
    Std. Fuel (Bank 1/2)

    Firing Order
    A. 1
    B. 5
    C. 3
    D. 6
    E. 2
    F. 4

    They are wired as such to each individual coil

    Ignition options
    --------------------------
    Tooth wheel
    Skip pulse 3
    Rising edge
    Going high
    Cop
    Ms3x Spark
    Ms3x Cam in

    Dual wheel missing teeth
    60/2/84°
    Main speed crank wheel
    2nd trigger rising edge
    Crank dwell 6.0ms
    Crank Adv. 12°
    Nominal dwell 3.5ms
    Spark duration 1.0ms

    Cranking rpm 200

    I have asked many people and nobody found any issues with my tune... My fuel/afr/ignition tables are from a previously running turbo m20 tune.

    #2
    Isn't it 1-3-5-6-2-4??

    Comment


      #3
      Originally posted by flumph View Post
      Isn't it 1-3-5-6-2-4??
      The firing order as stated in the bently is 1-5-3-6-2-4

      Comment


        #4
        Figured it out!!!!

        Had my over boost protection on 70 kpa to cut fuel and spark. Im running a 10psi (70kpa) spring and i wanted it to cut anything above 10psi... since atmosphere pressure is 100kpa (14.7psi) it automatically cut fuel and spark and didnt let my motor turn over. I than changed to 170kpa and it started up first try.

        Comment


          #5
          Haha that would do it!

          The old absolute pressure vs gauge pressure strikes again.

          Comment

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