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Thread: tuning my EFI

  1. #1
    maguyver's Avatar
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    tuning my EFI

    What’s up guys, when I take off from a complete stop I cavitate, now I know its not my wear ring I looked at it and its fine and I know its not my pump shoe etc, all that has been filled, im hitting 72-73 but I cant get out of the hole gunned. I herd something about loading the motor could my EFI setting be to aggressive for my bottom end, thanks in advance




    Jims Head Milled
    Jims FF plate
    RIVA 1200 Grate
    RIVA FF Exhaust
    RIVA D Plate & Chip
    RIVA EFI (settings 4437)
    VF3 Reeds From Island Racing (No Stuffers)
    Solas Dynafly 14/20 (not sure of pitch at the time)
    2005 Upgraded Pump
    Pump Shoe filled
    Pump Reinforcement (fiberglass)
    Stepped Sponsons
    Oil Pump Block Off
    Removed Airbox (open t boddies)
    Stock Trim tabs


  2. #2
    WATER WOODY's Avatar
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    When you say,"pump shoe filled",did you use the pump plug kit or just silicone?

    Is it an untouched 14/20 or has it been bent?

    no jetworks mod?

  3. #3
    My son (mohawk man) jeffsntx's Avatar
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    You might try turning the #3 pot down and see what happens.

  4. #4
    maguyver's Avatar
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    Quote Originally Posted by WATER WOODY View Post
    When you say,"pump shoe filled",did you use the pump plug kit or just silicone?

    Is it an untouched 14/20 or has it been bent?

    no jetworks mod?

    yea i filled it with 4200

    its been pitched to get 7200 rpm the guy didnt tell me what he pitched it at

    no jetworks

  5. #5
    maguyver's Avatar
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    Quote Originally Posted by jeffsntx View Post
    You might try turning the #3 pot down and see what happens.


    that's what i was thinking but i havent had a chance to try it out

  6. #6
    3 x 1800 feeding my obsession sconti stellari's Avatar
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    Quote Originally Posted by maguyver View Post
    What’s up guys, when I take off from a complete stop I cavitate, now I know its not my wear ring I looked at it and its fine and I know its not my pump shoe etc, all that has been filled, im hitting 72-73 but I cant get out of the hole gunned. I herd something about loading the motor could my EFI setting be to aggressive for my bottom end, thanks in advance




    Jims Head Milled
    Jims FF plate
    RIVA 1200 Grate
    RIVA FF Exhaust
    RIVA D Plate & Chip
    RIVA EFI (settings 4437)
    VF3 Reeds From Island Racing (No Stuffers)
    Solas Dynafly 14/20 (not sure of pitch at the time)
    2005 Upgraded Pump
    Pump Shoe filled
    Pump Reinforcement (fiberglass)
    Stepped Sponsons
    Oil Pump Block Off
    Removed Airbox (open t boddies)
    Stock Trim tabs
    are you trimming the nose all the way down then trimming back up when you are up on plain?
    your efi looks ok, if you lean out #3 do so slowly

  7. #7
    maguyver's Avatar
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    yea man and it spins less but still spins im thinking of instead of 4437 to go with 4337 what do u guys think

  8. #8
    ecpChris's Avatar
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    I would go 4-4-1.5-7.. #3 pot seems too rich for your mods. I have very similar mods on my 07 and i run 3-3-1-7. runs perfect and holeshots like a mofo. I have jetworks tho too

  9. #9
    MIARider's Avatar
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    what do the jet works do ?

  10. #10
    ecpChris's Avatar
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    Quote Originally Posted by MIARider View Post
    what do the jet works do ?
    jetworks AKA Island racing holeshot mod. there are many names for it but all share the same purpose. Its a valve that dries out the water box at low rpms for a more explosive holeshot

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