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  1. #1
    BLACK MAGIC HEADERS hydrojunkie's Avatar
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    Tested Headers Today With Gibson Exhaust

    I Am In Complete Awe. When I First Tested The Headers With A Straight Mid Pipe "water Trap" It Was Powerful But Loud. Well I Had Gibson Overnight Saturday My Prototype Back To Me And Fitted It Into The Header Setup And Wow Is All I Can Say. Powerful, Quiet, Clean. The Afr Numbers Are Perfect With The Powershot Now.

    The Stock Rxt I Have Is Currently Running 68 Mph @8180 With A Half Tank Of Gas. Mind Blowing Acceleration, It Feels Like A Stage 2 Plus Ski Now.


    Today I Will Post Video And Pictures Of It .

    I Also Plan To Test The Ski With A Rotax Wheel 9 Psi Along With A Stage 2 Prop. So Will Post All Results Soon..


  2. #2
    TERRY bigbuck12345's Avatar
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    Come On!!!!!!

    Way To Go Hydro,,,,=d> =d>

  3. #3
    West Texas RXP skoepp's Avatar
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    good work Jason!

  4. #4
    BLACK MAGIC HEADERS hydrojunkie's Avatar
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    Did Final Testing Today,gps Run With Full Header System And With Stock System.

    Air Temp Was 65 Deg
    Water Temp Was 65 Deg

    Header System With Gibson = 68 Mph @ 8180 Yesterday Without Gibson Just Header And Mid Pipe Was 67.5 But Very Loud. The Powershot Was Used To Correct Lean Condidtions. =d> =d>



    Stock Exhaust With Jpipe , Stock Waterbox, Riva Rear Thru Hull
    = 64.9 @ 7920.

    So With Header System You Gain Over 2.5 Mph On Stock Ski With 4 Inch Air Intake, Along With Extreme Bottom And Midrange Acceleration. Therefore This Concludes My Testing On The Full Header System On A Stock Ski.

  5. #5
    JFizzleJR's Avatar
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    make sure you clarify when the 4" intake was added. what you wrote makes it sound like the headers AND 4" air intake together caused a 250 rpm gain.

  6. #6
    West Texas RXP skoepp's Avatar
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    Awesome test, just as you expected.
    So if i want to run headers with just the mid pipe there is not much difference in performance gain or loss as with Gibson exhaust added?

    Jason, you know what I am getting at. I want it louder than GH box and not quiter You have proven with the muffler it is much quiter then GH box.

  7. #7
    BLACK MAGIC HEADERS hydrojunkie's Avatar
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    Quote Originally Posted by JFizzleJR View Post
    make sure you clarify when the 4" intake was added. what you wrote makes it sound like the headers AND 4" air intake together caused a 250 rpm gain.
    YES THE 4 INCH WAS NEEDED OR A RIVA AIR INTAKE BECAUSE OF THE CONDITIONS ON TOP END NEEDING TO BE LEANER.THAT DIDNT GIVE ME ALL THE POWER,JUST HELPED EVEN OUT AFR NUIMBERS

  8. #8
    Fat Man, Little Boat Region8Ultra250X's Avatar
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    jason nice numbers... you coming down for the race this weekend?


    also anyword on the proto stuff for the 250x?

  9. #9
    JFizzleJR's Avatar
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    Quote Originally Posted by hydrojunkie View Post
    YES THE 4 INCH WAS NEEDED OR A RIVA AIR INTAKE BECAUSE OF THE CONDITIONS ON TOP END NEEDING TO BE LEANER.THAT DIDNT GIVE ME ALL THE POWER,JUST HELPED EVEN OUT AFR NUIMBERS

    I know that.. but did you test the stock rxt with 4" intake, then add headers to note the difference? Or did you add both the intake and headers to the bone stock RXT for 250 rpms?

  10. #10
    BLACK MAGIC HEADERS hydrojunkie's Avatar
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    Quote Originally Posted by JFizzleJR View Post
    I know that.. but did you test the stock rxt with 4" intake, then add headers to note the difference? Or did you add both the intake and headers to the bone stock RXT for 250 rpms?
    I ADDED THE 4 INCH AFTER BECAUSE OF THE CONDITIONS.

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