K&N Air Filter- Is there a difference in performance?

Toni Reviews is a youtube channel dedicated to real rider reviews, from a London born and bred cockney. In this video I review K&N High Flow Performance Air Filter and ask Is there any difference in performance?
I also give a brief instrcution fiting guide if you are installing on the street twin or similar, you may find helpful.
Like and subscribe to my channel 'Toni Reviews' for more honest bike related news and reviews.
Links
Let us Live- motorcycle inspired clothing - www.letuslive.co.uk
K&N filters- www.knfilters.co.uk