Well, you can save your bucks and forget the K&N.
Buy an extra stock filter and keep it clean and oiled,ready to swap for service intervals.The slip on you choose will determine if you need to rejet.If there is a flat spot created then adjusting the needle might cure it.Or in an extreme case going one up/down on the main jets could cure it.
The bikes are made lean in the rpm that they do the testing for.They have to be sufficiently rich on the top end or burnt up things happen.
This is just what I would recommend......Unless you want to spend the money regardless....
Luck
Jason
Everyone has their own thing.....
Buy an extra stock filter and keep it clean and oiled,ready to swap for service intervals.The slip on you choose will determine if you need to rejet.If there is a flat spot created then adjusting the needle might cure it.Or in an extreme case going one up/down on the main jets could cure it.
The bikes are made lean in the rpm that they do the testing for.They have to be sufficiently rich on the top end or burnt up things happen.
This is just what I would recommend......Unless you want to spend the money regardless....
Luck
Jason
Everyone has their own thing.....