Filter or no filter?

[Husky]

Just for the track do you run a filter or no filter. I tried to run without one and bike seemed to run better but not sure if maybe was due to different air density that day or something else.

 

[Commuta_Busa]

I would run a filter if I were you. Unless you're racing for the big bucks in the final and know that you've pushed every possible thing to the max first, then I might pull the filter.