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Out of these two scenarios, which would result in Richer running bike? Assume humidity is at 50% for both of them.

3000 foot Elevation, 50 degrees F
Sea Level, 90 degrees F

Which would be richer? By about how much? Just trying to get an idea of how much temperature affects jetting compared to elevation.
 

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The air at 3000ft @ 50F is less dense than 0ft @ 90F, so 3000ft @ 50F runs richer

I can understand thermals, but I don't know enough about different jet sizes to tell you how much of a difference it'll make to your bike's performance.

*Edit: This is assuming constant humidity, which won't necessarily be the case. If the higher altitude is less humid than the lower altitude, the difference between the two scenarios is smaller.
 

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Here are some more "calculators" for jetting. Interesting for some, intimdating to others. Calculators Or you could do what most of us do, just ride it.:D
 
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Quick, silly answer: sell your bike and buy one with EFI.

LOL, just kidding (mostly). I don't have a clue. This is why I refuse to ever touch the settings of a carburetor. Sure it can be improved, but it can also really be screwed up (and even "improvements" are likely to be detriments in certain circumstances - even just considering performance/optimization). I just leave them bone stock. I figure you won't have an optimally running bike in any given scenario, but you'll have a running bike in any given scenario.

Also, how many miles do you currently have on the 919? 70k is pretty sweet.
 
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Quick, silly answer: sell your bike and buy one with EFI.

LOL, just kidding (mostly). I don't have a clue. This is why I refuse to ever touch the settings of a carburetor. Sure it can be improved, but it can also really be screwed up (and even "improvements" are likely to be detriments in certain circumstances - even just considering performance/optimization). I just leave them bone stock. I figure you won't have an optimally running bike in any given scenario, but you'll have a running bike in any given scenario.

Also, how many miles do you currently have on the 919? 70k is pretty sweet.
Jeeezzzz K.J. Your a party pooper!:p Screwing around with things best left alone is part of the game.
 
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