Unless you are running a carb you will not need one.
Otherwise, A tempaflow adjusts for temperature variations by adjsuting the bowl vacuum in your carb. That way you do not have to rejet your carbs for different temps.
Yes it is well worth the money...it act's just like ski-doo's dpm.U have better performance cause the sled is alway's jetted for the right temp and u will also have better fuel milage.Before people start asking it is only for carb sled's.
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