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  1. #1
    Water4fire's Avatar
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    Anyone running a RR ECU with 2Rude or ETSCer?

    Guys what are the fueling needs for the RR ECU (8650) and 2Rude and or ET68-140? Please advise injecters FPR and all. I welcome thoughts. PLEASE. Lets say in 95+ degree temps for Summer.

    Thanks


  2. #2
    speedskixp's Avatar
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    Yes, we have been playing with this same setup on a friends boat. As of now we are running 55lb injectors and rrfpr with a base pressure of 42lbs. We started out with 48lb injectors but could not get the A/f below 13.0 @wot then we added a high pressure fuel pump and that helped but Idle was very rich @10.4. After installing the 55's we got the idle a little better @ 10.8 and that is as far as we got. Next we will be adding a duel reg setup or controler to help dial it in better.
    This is with an et 68-140.
    Hope this helps.
    Jim

  3. #3
    Water4fire's Avatar
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    So with a Stock Fuel pump it is not gonna happen, hua?


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  4. #4
    speedskixp's Avatar
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    Quote Originally Posted by Water4fire View Post
    So with a Stock Fuel pump it is not gonna happen, hua?


    .
    With the bigger injectors it will but with the 48's we were maxing the fuel pump with a base pressure over 65lbs and it was still in the 13's @ wot.
    The 48's may work with the 2rude though.

  5. #5
    Water4fire's Avatar
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    Would you say Riva is a better way to go? I am just not familar with RR.

    This ski will have a 2Rude,

    .

  6. #6
    rxp_boy's Avatar
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    I am using 55lbs with my riva ecu and RRFPR, base pressure 55 psi , 10.9 from idle up to 6500, WOT 12.5 - 12 and even 11s

    I am rich on bottom but still need to put down my revs as I am eating the rev limiter at 8600rpm !!

    I will also try 50 lbs injector and RRFPR and check

  7. #7
    rxp_boy's Avatar
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    Iam using an ET68 140 charger

  8. #8
    Water4fire's Avatar
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    Yes, My Riva is set at 55 lb base pressure with 50lb injecters.

    But RR is a different timming curve. And doesn't have knock control.


    .

  9. #9
    REID2168's Avatar
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    not to critique anyone but i would type either ROTAX or RIVA because typing RR could mean Rotax Racing OR RIVA RACING and if the other guys advising u doesnt know which one for sure then...........well i guess we already know what could happen dont we! just a thought fellas!

  10. #10
    speedskixp's Avatar
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    Quote Originally Posted by Water4fire View Post
    Would you say Riva is a better way to go? I am just not familar with RR.

    This ski will have a 2Rude,

    .
    It seams to be easier to dial in with the riva ecu and it will allow you to run the 50lb injectors and still have good #s as it is mapped to idle with them and not be pig rich. You can acually lower your base pressure below 58lbs.

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