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  1. #1

    R&D Powershot programer

    I'm Running a 07 rxt - Free mods, gutted waterbox w/ 3 1/2 in rear exhaust, riva cooler , riva stage 2 supercharger wheel, 4 tec 42 lb. injectors, kanoflex 4 " frount intake, 9.8 lbs boost, pump wedge, riva grate, 15/22r impeller,turning 8040 rpms @72 mph -5 gal fuel.
    My problem is I have adjusted the R&D controler every way I can and I keep coming up lean at full throttle. It idles around 13.5:1 on afr gauge and cruses around 14.7: at 6500.I'm also running stock fuel pump.

    Any -thanks


  2. #2
    Quote Originally Posted by Del's Watercraft View Post
    I'm Running a 07 rxt - Free mods, gutted waterbox w/ 3 1/2 in rear exhaust, riva cooler , riva stage 2 supercharger wheel, 4 tec 42 lb. injectors, kanoflex 4 " frount intake, 9.8 lbs boost, pump wedge, riva grate, 15/22r impeller,turning 8040 rpms @72 mph -5 gal fuel.
    My problem is I have adjusted the R&D controler every way I can and I keep coming up lean at full throttle. It idles around 13.5:1 on afr gauge and cruses around 14.7: at 6500.I'm also running stock fuel pump.

    Any -thanks
    Sounds like it might be hooked up wrong. Check your wiring.

  3. #3

    Join Date
    Jun 2005
    Location
    rome ga
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    A/f guage could be having problems. Maybe just sensor calibration.
    Try running without r&d controller.

  4. #4

    Join Date
    Sep 2007
    Location
    Lexington, Ky
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    1,656
    How does this go about modify the fueling? I have seen one, and understand that it just intercepts the injector signal wires.
    But does anyone have any specifics on how it works? Does it increase/decrease the fueling by modifying the pulse width, or the duty cycle?

  5. #5

    Join Date
    Jul 2007
    Location
    PDX - Oregon
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    Would like to know also. Ttt

  6. #6

    Join Date
    Sep 2007
    Location
    Lexington, Ky
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    1,656
    I did some research on this last night, and it modifies the duty cycle, not the pulse width. So this would be more useful going with overly big injectors, and pulling out duty cycle in places where its overly rich. Not for increasing fuel.

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