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  1. #21
    RxPrider's Avatar
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    thnkx alot for the fast reply and no worries on the pics dont rush urself i cant get my ic setup started till its closer to mid march, and the kit i dont need as my friend just built a turbo kit for his crx and gave me all the new left over pipe and some coulplers


  2. #22
    RxPrider's Avatar
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    do u happen to know what bends are in the two pipes, as i last remember they were a 90 and 45?

  3. #23
    West Texas RXP skoepp's Avatar
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    Quote Originally Posted by RxPrider View Post
    do u happen to know what bends are in the two pipes, as i last remember they were a 90 and 45?
    these are not my skis but here are some XS installs
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    Last edited by skoepp; 02-19-2008 at 02:19 PM.

  4. #24
    West Texas RXP skoepp's Avatar
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    and some more

    hope this helps
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    Last edited by skoepp; 02-19-2008 at 02:19 PM.

  5. #25
    RxPrider's Avatar
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    thnkx alot!!!

  6. #26
    West Texas RXP skoepp's Avatar
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    any comments would be appreciated

    Quote Originally Posted by skoepp View Post
    thanks man,

    water 44 and air 61. elevation 2,600 ft. basically same as last test. (300 ft. less in elevation)
    pretty bad chop - wind, skis had 5 bars this time and 2 bars in last test, not that it matters much.

    GTX
    added riva thru hull and water box mod.
    Exact same speed - not much change avg 66.5 with spike of 67.2.
    Exactly same rpm 7,600 with flash of 7,610 rpm.
    Sounds alot beter, no more ignoring resonance at 3,000 to 4,500 rpm.
    Isn,t near as loud as it was on the rxp.
    I think that exhaust mod on a low rpm ski and not heavily moded that you will see hardly any gain in performance.
    Next weekend I will see what the XS IC does on that setup.
    She needs more boost but for now it will wait.

    RXP
    Added 15/20R prop with -1.5 mm. (had 14/19R - 1mm)
    Removed riva thru hull with water box mod.
    Installed (temporary) stock water box with rubber hose free flow exhaust.
    Hole shot - better hook up, seemed same acceleration, top speed avg 75.9
    with high of 76.2 mph. previous test 76.4 high at 8,150 - 8,200 rpm with 10.6 to 10.7 lbs of boost.
    Rpm's this time 8,050 - 8,100 rpm with 10.5 to 10.6 lbs of boost.
    Basically the same speed with better hook up at 100 less rpm. thats better but no speed to be found.
    I think that the stock box and rubber hose hurt some. It definitely was quiet, I could hear the engine and sc too a tee.
    I just have too see if when install the green box that I gain some rpm
    (50+ ) back. I hope so, then maybe I can put some back in the prop and gain some speed.
    anyone got any comments to new speeds or lack thereof??
    My pics of skis are on page 2 of this thread. Just posted them last night.
    Last edited by skoepp; 02-02-2008 at 11:47 AM.

  7. #27
    JFizzleJR's Avatar
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    Try calculating your Density Altitude to see if weather played a role in the performance. IMO you should'nt get too worried or flustered about it unless you do, literally, a back-to-back test and it clearly shows no results.

  8. #28
    skoepp,

    I'm jealous of the speed your gtx...the only diff I see besides the lack of an IC (between your's and my rxt) is an altered prop and a thru hull exhuast.

    But your running at a much higher altitude so...I'm jealous.

    What's your ski weigh...including driver? (this is a variable that our mod lists should include.)
    Last edited by VaRedneck; 02-02-2008 at 08:24 PM.

  9. #29
    still kicking ass and taking names! Pale Rider's Avatar
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    skoepp, NICCCCCE, VERY NICCCE! , good work bro!...PR...

  10. #30
    Kaybat's Avatar
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    claiming ignorance here....

    won't the thru hull exhaust make my 03 louder than the "free flow" exhaust i currently have???(quieter is better here)....that 3K drone is killin' me man

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