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  1. #1
    Norwegian Wiking Trond's Avatar
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    Rude fuel controller

    Im helping my friend tune his ski... We want to use stock ecu, Rude1 sc, ext ic and rear air. I want to put on some 50lb injectors and control them with the RFC. I will need to remove alot of fuel on lower rpms, but will this be too much for the RFC and trip the ecu?


  2. #2
    REID2168's Avatar
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    i had the Rude controller working way back when they first hit the market at least 2 years ago and my experience was when i used the Rude controller with either the Riva or Rotax ecu i found u could not go any lower than 7 to 7.5 on the fuel reduction numbers when i was wanting to pull fuel to get good idle AF.......if i went lower than these perameters/numbers in the map it would send a bad signal and beep with either ecu i was using....i didnt try the stock ecu but this was my experience with the Riva & Rotax....good luck!

  3. #3

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    Quote Originally Posted by Trond View Post
    Im helping my friend tune his ski... We want to use stock ecu, Rude1 sc, ext ic and rear air. I want to put on some 50lb injectors and control them with the RFC. I will need to remove alot of fuel on lower rpms, but will this be too much for the RFC and trip the ecu?
    how fast would that set up be.

  4. #4
    Norwegian Wiking Trond's Avatar
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    Quote Originally Posted by REID2168 View Post
    i had the Rude controller working way back when they first hit the market at least 2 years ago and my experience was when i used the Rude controller with either the Riva or Rotax ecu i found u could not go any lower than 7 to 7.5 on the fuel reduction numbers when i was wanting to pull fuel to get good idle AF.......if i went lower than these perameters/numbers in the map it would send a bad signal and beep with either ecu i was using....i didnt try the stock ecu but this was my experience with the Riva & Rotax....good luck!

    What injectors were you using then?

  5. #5
    Norwegian Wiking Trond's Avatar
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    Quote Originally Posted by seadoolover View Post
    how fast would that set up be.

    We are shooting for 78-80mph...

  6. #6
    REID2168's Avatar
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    Quote Originally Posted by Trond View Post
    What injectors were you using then?

    Riva 50# injectors!

  7. #7
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    trond i would get ahold of Cal (HighPsi) and see what he says, he seems to be the expert on tuning those.

  8. #8
    home of the dislexic fingers breon's Avatar
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    i would say go with 42 or possibly 48 and subtract some and add some on the top .and yes 78 ish is about right on speed

  9. #9
    Quote Originally Posted by Trond View Post
    Im helping my friend tune his ski... We want to use stock ecu, Rude1 sc, ext ic and rear air. I want to put on some 50lb injectors and control them with the RFC. I will need to remove alot of fuel on lower rpms, but will this be too much for the RFC and trip the ecu?
    With the stock ECU/rude 1 the 50lb injectors/RFC are ideal .

  10. #10
    Norwegian Wiking Trond's Avatar
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    Hmm... 50's or 42's
    I might as well just buy a set of 50's... nice to have laying around I got some 42's allready.

    The ski will also have Riva OO-plate, RE-blockoffs, Riva grate, 15/20R and cold norwegian water
    So we hope for 78mph, but dream of breaking the 80mph with lots of fine tuning

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