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    M50 wiring help

    I have an m50b30 that I stroked using m54 internals and supertech valvetrain.

    Anyway, I am swapping it in my e30 right now. I dont have the intake or cooking hooked up. just trying to get it to crank before I continue.

    when I turn the key, I get nothing. i hear the ignition switch, but nothing buzzing from the engine bay, no fuel pump action, nothing.

    this makes me think that its DME related. I have a silver label 413 with ews delete chip. I clipped pin 7 from x20 connector on e36 harness (22rpd said to clip this ews wire). I think its DME related bc the fuel pump doesnt even turn on.

    I have brand new fuel pump and ecu relays from dealership.

    all my grounds are good.

    Thank you

    #2
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      #3
      Doesn't sound like the ECU is the only issue just yet. I would start by looking at your wiring. Your starter should still be able to crank (even without a chip inside the ecu).
      Check your ground connections on the engine harness.
      PNP Adapter Harness Wiring for M52TU, M54, S54, M60, M62, M62TU, S62, M50, S50, M52, S52 & MORE

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