replacing air box with velocity stacks?

Yamaha XS 850 discussion forum:


replacing air box with velocity stacks?

replacing air box with velocity stacks? 
atticus1271 said 2007-10-01 02:15 
 
I am in the process of replacing my air box with velocity stacks, but different people have told me i have to re-jet the carbs for proper performance. I have no other modifications to this bike, but also dont want to hurt the valves with this. anybody know whether i need to do this? i would appreciate any responses. thanks 
 
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