Dyno Run - Wrist Twisters
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post #1 of 3 Old 08-29-2007, 05:00 PM Thread Starter
Join Date: Mar 2006
Location: douglasville, ga
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Dyno Run

Rode the 9er to work today so I could have them put it on the dyno. the bike is bone stock but I wanted to get the numbers before I made any changes. Turns out the stock set-up is making max 96hp and 60.27 torques numbers. The interesting thing is that from about 2000 rpms the bike is running lean (14 to 1 air/fuel) and gradually richens as it approaches 4200 rpms and continues to richen to about 12 to 1 through the remainder of the run up to redline.

Just wondering if anyone else has seen similar results. The dyno guy says he has seen the same type of results on other bikes. It occurred to me that this could be the cause of the often mentioned exhaust stink that so many of us have complained about.

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post #2 of 3 Old 08-29-2007, 08:34 PM
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Join Date: Aug 2006
Location: Tuscaloosa, AL
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The 919 stock runs RICH. That with the positioning of the pipes under the seat are probably the biggest factors to the "stink" you are experiencing. As for the dyno results it only goes to show that every dyno out there is different. I ran mine and had 118hp and 74ft/lb torque. With the flapper mod, bafflectomy and a pcIII installed. Get yerself a pcIII and try a couple of maps. I currently use the simpson map but had found the sato map to also be very good. Also less stink.... unless I can't smell it anymore!

Good Luck!

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post #3 of 3 Old 08-29-2007, 09:32 PM
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Location: Marshall, TX
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If the PAIR system wasn't disconnected, then you will have false Air/Fuel readings.

Motorusher formally known as DirtySanchez919.
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