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Problems with 80lb. injectors

Discussion in 'EFI Tuning Questions and Engine Management' started by yoteehunter, Oct 31, 2011.

  1. yoteehunter

    Joined:
    Apr 20, 2006
    Has anyone had any problems tuning with 80lb mototron injectors? I have a massive problem at idle. It is rich rich and the plugs are coming out dripping with fuel.

    Motor is a 4.6L DOHC ported B heads, comp cams, built lower end and 76mm turbo. I have the SCT BA5000 MAS meter in a 4" tube. Areo A1000 fuel set up with good fuel pressure. Cant seem to get it to idle without fowling plugs and running way to rich. Anyone know anything about pulse width for these injectors?
     
    yoteehunter, Oct 31, 2011
    #1

  2. wesk

    Joined:
    Jul 12, 2006
    It has been a while since I tuned a ford ECU, but they typically have a "high slope," "low slope," as well as a deadtime/opentime number, correct? On standard ECU's (where deadtime is figured as a pure offset, and not a two piece function), those injectors require a much lower deadtime number than typical high-z injectors. Typically in the .6-.7 range, vs. .9-1 for an "old school" EV1.

    What do you have entered currently for high slope, low slope, and open time?
     
    wesk, Nov 3, 2011
    #2
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