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  1. #1
    otoss's Avatar
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    Riva athena or v-tech reflash ecu?

    Hi,

    First of all, I wouldlike to thank you all for the great inputs on my previous thread "riva valve train or supertech valve train" with all the inputs I decided to go with the riva ones.

    Right now I'm looking on the ecu, I'm making an offshore ski, my goal is to produce 8650rpm and mph don't really know what I can expect with the setup I'm making.

    I'm willing to buy:

    -*riva XX supercharger or ET137 XLE "if people telling me it's better for offshore",
    -riva sponsons
    -riva or v-tech injectors "it depends of the inputs about the ecu "
    - R&d grate (have it already awesome)
    -Front sponsons (have it already awesome)
    -15/20r prop (have it but don't know if I need a different one someone might help "
    -aluminium fuel rail terminator and turbosmart rrpfr "have it not installed"
    -Gibson exhaust "have it mechanic is installing it"
    -almost forgot "riva or rotax thermostat"

    If people can give me some inputs about these two ecus to help me in my choice that will be greatly appreciated.

    Ecu is very important so I don't want to be disappointed. I need a good throttle response in the waves and a good speed to compete with the ultra300 farthing (stage without racing gaz).

    Thanks all.
    Last edited by otoss; 03-10-2013 at 01:39 PM.


  2. #2
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    What's your goal speed or a little speed and reliability ? U ride in ocean mostly?

  3. #3
    otoss's Avatar
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    Quote Originally Posted by thatdude596 View Post
    What's your goal speed or a little speed and reliability ? U ride in ocean mostly?
    hi,

    Yep we don't have lakes where I live so it's ocean ride. If I can get a minimum of 78mph I will be happy. I need a reliable ski, we are doing some 25min to 35 min offshore racing. My next race is the 16th of april with 3rounds of 30 min race.

  4. #4
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    You can look at my mods and from what I'm told from numerous people its about as reliable and fast without spending big money. Fizzle inter cooler, 50 lb injectors, thru hull, tdr waterbox, catch can, v tech tune set at 8300 rpm's, solas prop reworked, opas delete, riva rear air( bad for ocean riding), riva adjustable nozzle, rear bucket removed. 77 mph and reliable with stock valve train

  5. #5
    Everything revolves on how do you plan to fine tune the motor?

    Andy

  6. #6
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    Just remember the more mods the less reliable.

  7. #7
    Moderator beerdart's Avatar
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    Riva is a proven factory tune. V-tech is good for custom tunes if you data log.

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  9. #8
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    V tech is set n forget unless you want to buy the programmer

  10. #9
    Quote Originally Posted by thatdude596 View Post
    V tech is set n forget unless you want to buy the programmer
    How would you plan verify the tune is close? CMD? Feel? No apparent bad noises? VTech logger with some sort of third party AFR device?

    Andy

  11. #10
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    Tune it and run it same as my vw jetta. Boost gauge for looks. i think some of you guys spend way more than needed. Not a space ship. Plug checks is one way. Again this isn't a space ship and isn't running the motor to its limits.

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