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I have a buddy with a 450r and i have rode his many times and i love the throttle response he has. i know my 400 will never touch the 450r but i would love to improve this. any idea on how to?
 

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Well????? since the 450R has a throttle position sensor (depending on year) I highly doubt you can duplicate it. you may get close though but believe it or not that will require adding a 450R carb to your 400 minus the TPS of course and a good port and polish to open up that restricted head flow
 

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I’m trying to give my carbureted 2011 Honda foreman more throttle response / launch power any suggestions I thought about a jet kit but not sure
 

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I’m trying to give my carbureted 2011 Honda foreman more throttle response / launch Time any suggestions I’ve thought about a het kit but not sure
 
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