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  1. #1
    Roll Tide!! SeadooTech's Avatar
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    Difference in riva and rotax racing ecu

    I'm going to be running the 68 140 le supercharger and was wondering what the main difference in the rr and the riva ecu. I know the rr doesn't have dess key optionor knock sensor


  2. #2
    Got Boost? psycho rxp's Avatar
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    Not much difference, other than that, and the Riva has an 8600 Rev limit, and mapped for 50# injectors. Rotax, can be whatever limit u want.

  3. #3
    Moderator Snoman's Avatar
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    Timing curve is a little more aggressive on the Rotax VS the Riva too

  4. #4
    Roll Tide!! SeadooTech's Avatar
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    Which one would you guys rather have, I only want to buy one ecu

  5. #5
    WOT 88's Avatar
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    If it were me, I'd go with the Riva, simply because of the lack the knock sensor option on the RR.

    If you got some bad fuel or something the riva unit would pull timing if detonation occurred potentially saving you some trouble.

  6. #6
    HORSEPOWER JUNKIE 9secZO6's Avatar
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    This would be the main reason I told u the riva was the better choice for high boost or turbo.Detonation is a mo fo.....

  7. #7
    mac_man_luke's Avatar
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    Also consider a les cooke flash

    Then you can use decent injectors...

  8. #8
    R88ory RXP's Avatar
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    Quote Originally Posted by mac_man_luke View Post
    Also consider a les cooke flash

    Then you can use decent injectors...
    You can use the bosch 48s with the riva, or bigger with RRFPR or another way to turn the fueling. You are not restricted to the riva injectors with the riva ECU.

    But your right a Les cooke re-flash would be the best option IMO.

    R88

  9. #9
    The Riva One, i have both....

    In the Riva you don't have to worry with the injectors, it Works with 48,50 or if the Fuel is Bad the Riva ECU corrects.

    Just my opinion

  10. #10
    HORSEPOWER JUNKIE 9secZO6's Avatar
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    I ran the riva w/ 55lb inj and a rrfpr and was good to 20psi

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