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Thread: DIS Conversion From Distributor

  1. #41
    Join Date
    Dec 2009
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    Connecticut
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    It's worth trying "Combo", but it won't help your starting problem.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  2. #42

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    Yes, I know it's a cranking/IAC/timing/fuel pressure to get it to start without touching it. Thanks.

  3. #43
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    Dec 2009
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    Connecticut
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    Not fuel pressure. Cranking Fuel (lb/hr), Cranking Timing & IAC Parked Position %, because they function independently under 400 RPM (or whatever your "Crank To Run RPM" is). FYI: The "Crank To Run RPM" parameter (in Ignition Parameters) is not your actual cranking RPM when starting the engine.

    If you really take the time to read this thread below, you will be able to proficiently tune your starting parameters:
    http://forums.holley.com/showthread....6254#post36254 (Good Starting Advice Thread - Especially posts #2, #4 & #6.)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  4. #44

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    I read it and applied all of it to the car. Still no success. You might be right, lb/hr delivered is going to be the Cranking Fuel setting. Lowering the fuel pressure further should change the scaling in that screen shouldn't it?

  5. #45
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    Dec 2009
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    Connecticut
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    Quote Originally Posted by Paul P View Post
    Lowering the fuel pressure further should change the scaling in that screen, shouldn't it?
    Lowering the fuel pressure won't actually change the values in that EFI software screen, but it will decrease the Cranking Fuel injected. If you need less Cranking Fuel, decrease it in the Cranking Fuel table.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  6. #46

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    It worked! So the pressure does effect it enough when you're running out of adjustment between Cranking Fuel reduction & max IAC Park Position %. I also lowered the start/run RPM to 250 since from the datalog, it cranks at 130 RPM. It was set to 400 which would always be running. Thanks for the help. I'm going to stay with the Speed Density setup, since it does run well enough not to dive into another setup. At least what I was thinking was true. Been doing this a long time with other systems. Thanks.
    Last edited by Paul P; 05-20-2017 at 08:06 AM.

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