05-11-2008, 09:54 AM #1
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..
05-11-2008, 10:30 AM #2
Way To Go Hydro,,,,=d> =d>
05-11-2008, 01:17 PM #3
05-11-2008, 03:16 PM #4
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.
05-11-2008, 07:24 PM #5
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.
05-11-2008, 08:17 PM #6
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.
05-11-2008, 09:25 PM #7
05-11-2008, 09:28 PM #8
jason nice numbers... you coming down for the race this weekend?
also anyword on the proto stuff for the 250x?
05-11-2008, 09:33 PM #9
05-11-2008, 10:16 PM #10
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