Be sure the paper filter element you choose has enough swept area to handle the airflow without restricting it. Running a too small filter element will be the equivalent of keeping the choke partially applied all the time.
Jerry
I started out using a K&N filter which was 1.75" tall. I then experimented with one which was2.5" tall. What a world of difference. RPM at idle dropped big time. So if you go paper, don't go too small.
