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  1. #1
    Norwegian Wiking Trond's Avatar
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    Rotax Racing ECU 4501

    What injectors are they actually programmed to work with?


  2. #2
    here's an instruction sheet I found in the classifieds. it says to use a 5556 injector which I believe is a 60lb? I ran it with the stock 38's, and haven't had any problems...
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  3. #3
    CC Racer kenshin89's Avatar
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    4501, 4501/06, 4501/07 that have a 8600 rev limiter I think are supposed to be run with 42lb injectors and 4501/08 that has a 8800 rev limiter is supposed to be ran with 60lb injectors.

  4. #4
    Norwegian Wiking Trond's Avatar
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    Thanks... Mine is a 05 8600 I belive, and I belived it was the 42's, and got my answer

  5. #5
    Site Admin Green Hulk's Avatar
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    Stock or 42's will work great with it.

  6. #6

    Question PLS HELP ecu and supercharger

    Hello,

    I would like to ask you guys some questions. Here where i am not so many people know about changing in RXP X.

    I have bought ecu 4501/08 light springs and injectors 60lb. Also i have purchased ETEC 68/140. In the instruction of ECU is writen that i need to change also valves. Pls let me know if this is very important. One guy from one internet store told me to change only springs. I thing when my rpm will go to 8800 i must change also valves.

    Pls help me because everyone in my country is telling different things.

    Better when i get some inf on forum.

    Thank you very much for all information.

  7. #7
    ctriverguy's Avatar
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    Quote Originally Posted by flow23 View Post
    Hello,

    I would like to ask you guys some questions. Here where i am not so many people know about changing in RXP X.

    I have bought ecu 4501/08 light springs and injectors 60lb. Also i have purchased ETEC 68/140. In the instruction of ECU is writen that i need to change also valves. Pls let me know if this is very important. One guy from one internet store told me to change only springs. I thing when my rpm will go to 8800 i must change also valves.

    Pls help me because everyone in my country is telling different things.

    Better when i get some inf on forum.

    Thank you very much for all information.

    this is what is posted in the store ...
    This ECU fits 08 model skis and has an 8800 RPM rev limiter. You must run lightened valve train components to handle this high of a RPM range. The lightweight valves and Riva valve train upgrade kit is highly recommended.
    You must also run 60 lb hr injectors with this ECU.


    valves and springs must be changed...

  8. #8

    Question Rr ecu 4501/08

    Thank you for inf.

    pls let me know which valves i should buy. I have springs from ferrea. They have also valves. What do you thing they are ok.

    SO i will change springs and valves. Is it enough to save engine. Injector i have 60s from ETEC i thing.

    After how many hours i need to change valves again.
    Thank you for information

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