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  1. #1
    camar0's Avatar
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    Angry Anyone have any other ideas to get my damn GTX movin?

    Great minds have already been consulted but I am taking anything at this point to go somewhat faster... lol...

    So here is what I have been up 2:

    Removed:
    GTX 185hp motor
    Riva 3" intake

    Installed:
    RXP 215hp motor
    4" Intake

    So far this damn boat can only get to 70.5 mph GPS in 95-100 degree heat... lol... So we can assume this goes faster in colder weather but im tryin to max this out for use in the summer...

    Green wheel boost readings:

    185hp motor - 6.2 was the highest @ 67mph in 90+ degress
    215hp motor - 9.2 currently @ 70.5 in 90+ degrees

    Props tested were 14/19, 15/20 and 16/21 also many times bending

    More testing is going to be done today with prop bends as rpms are 8100 and stay there so.........

    Also we are going to put a stock RXP SC to see what boost/rpm/mph are showing.......

    Anyone have any ideas to get another 2-4mph out of this without spending alot more money?

    I cannot do Rotax/riva ecu, rude charger as that is 2 much for me at the moment...


  2. #2
    I'm kind of a big deal SeanCucf's Avatar
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    won't the knock sensor adaptor hinder an 05+ ecu which doesn't need?

    other than that the 3 seaters are a lot more work to get MPH once you break 70...

  3. #3
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    Thats good numbers for basically a GTX that is now an RXT...

    Did you swap drive shafts?
    Are you running the stock IC?

  4. #4
    camar0's Avatar
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    Yes it has an RXT driveshaft

    I have the Pirranha IC

    70 just sux for me... haha...

  5. #5
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    Well, JP had his RXT with a throu hull and Rotax ECU on a stock IC and went 70.9......We swapped for a XS and he jumped to 73.0....

  6. #6
    camar0's Avatar
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    SO u think IC change eh?

  7. #7
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    Quote Originally Posted by camar0 View Post
    SO u think IC change eh?
    Well, if you are getting 70mph with a STOCK ecu, then you can definately get into the 72's with an external IC and a repitch prop...

    An XS setup, and custom pipes (like mine) you can get there for about $300-400...

  8. #8
    GOTTA PAY TO PLAY!!! rocko672's Avatar
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    just be as happy as your wallet will allow you ...... cause its gets kinda exspensive to squeeze speed out of these couchs ......how much faster do you think you should be going with your current mods?....i know my stock machine would only see 67 on the dreamo so i guess i was really going about 63-64mph .....getting past 70 cost, getting past 75 really cost, and i will hate to add it all up once i break 80......goodluck....Ross

  9. #9
    formerly Gold06RXP Turbo Nick's Avatar
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    seems like good numbers for a GTX w/ those mods.

  10. #10
    camar0's Avatar
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    well considering it already has an external IC i would have to buy another to test to see if i pick up another 1-2mph i guess....

    Who sells the XS IC and how long does it normally take to get it?

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