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  1. #1

    Rossnemo V-Tech Level 2 testing

    Did some baseline testing today with my FZR in preparation for Jerrys V-Tech ECM flash.
    I will be testing his stage 2, or mid level flash.
    Baseline setup is now.

    09 FZR
    Jims VX plate
    R&D intake grate
    RRFPR set at stock 47- 48 psi static.
    Stock charger
    Frozenboost 14 intercooler with frozenboost BOV and piping.
    Rossnemo air intake system.
    Rossnemo crankcase evac system.
    Freeflow exhaust with vibrant 1796 resonator spliced into freeflow tube.
    Riva boost clamp
    Stock ECM
    Air mods on hull, seat and hood.
    Riva 13-22r inpeller
    OEM 83 exit nozzle.
    Steering nozzle bored to 91mm
    305Coco pump tunnel reinforcement.

    Todays testing weather info.
    93 degrees air temp
    75 dewpoint
    29.88 barometer
    salt water temp in tampa bay 91 degrees
    0 elevation

    4 passes today were all from 72.4 to a hi of 73.0
    RPMs were from 7640-7680. On the soft portion of the OEM limiter.
    Boost with an analog autometer gauge was 6.5 - 7.0
    No afr gauge yet.

    This was the first test session with the frozenboost 14 intercooler, compared to the OEM intercooler.
    Gains were very nice.
    With OEM intercooler the RPMS were always between 7480 and 7520.
    RPM gains were around 150, and on the soft limiter..
    Previous speeds with OEM cooler were always from 69.8 to a hi of 70.5
    Todays were from 72.4 to a hi of 73.
    Thats a big gain.
    This all proves how restrictive the OEM cooler is even on a stock charged motor.

    Next session will be no changes except adding an AFR gauge, and Jerrys V-Tech flashed ECM.
    Session after that will be adding a Riva B1 wheel to the supercharger.
    After that she gets the Race motor and Rotax pump in her to get ready for the hydrodrags.
    Great thing about florida this time of year is that every weekend is almost the same weather wise, so i wont have much fluctuation in testing week to week from the weather.
    Summer in florida is always hot, sweaty and slow.. But consistent.
    Stay tuned...


  2. #2

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    Nice Post Ross! This is the type of testing that the information is creditable. I assume you will remove the boost clamp when you install the reflash? Tommy Jordan

  3. #3
    Thanks Tommy,
    Yea the boost clamp came on the ski when i got it, and its one of the few things i left on it. It will come off before testing the V-Tech.

  4. #4
    Live Fast wave15stx's Avatar
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    interested to see how much the ecu will give you on stock boost..ross the wheel should be there today

  5. #5
    YAMAHA POWAAAA !!!!! 1_Fast_SHO's Avatar
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    Good Results, i am waiting on my ecu to get back from Jerry, to test it out on my JD Intercooler, E1 Set up

    Ross, didnt Jerry Said in a His thread that the Fpr should be at 52 PSI BASE

  6. #6
    lets race.... mikeFZR's Avatar
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    Question on one of your mods... what exactly does boring out the steering nozzle to 91mm do vs. the stock bore?

  7. #7
    Im not sure what the base fuel pressure is for Jerrys Map yet. Im sure that info will be supplied with the flash.
    91mm steering nozzle versus the stock 87x90 mm simply creates less drag on the water going through it, which translates to more speed. It does loosen up the steering and trim sensitivity slightly, but no big deal.

  8. #8
    Addicted Member 5001craig's Avatar
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    Great thread Ross. I can't even imagine how much time you spend working on your projects. Must be like therapy.

    Always like to read what you do.

  9. #9
    YAMAHA POWAAAA !!!!! 1_Fast_SHO's Avatar
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    Quote Originally Posted by rossnemo View Post
    Im not sure what the base fuel pressure is for Jerrys Map yet. Im sure that info will be supplied with the flash.
    91mm steering nozzle versus the stock 87x90 mm simply creates less drag on the water going through it, which translates to more speed. It does loosen up the steering and trim sensitivity slightly, but no big deal.
    Just heard from jerry it all depends on your set up and V Tech Level, I am going with an E1 which produce more boost than the B1 so your PSI definitely should be lower than mine

  10. #10
    hitman's Avatar
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    Nice info Ross. Extremely thorough.

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