Boggin?

I recently switched to a k&n filter, i left the air box on because i didnt want it to change the amout of air it got yet because i am waiting for an exhaust then i will jet it all properly all at once but right now since if changed air filters it seems a little bit more boggish like around 5th gear? any ideas?

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where in iowa are you from?
I hate 5th gear unless i am on long open roads. i like 4th pinned,lol. i have no clue why it would bog, you probably need to go up to a 150 mainjet.