I have been running the same setup for a few years now, cocktail shaker slip ons(no baffles),AI removed,air box removed and replaced with KnN's, and it was fine for a while.(I rejetted but have no idea what I used) I am backfiring and popping like crazy now.I know this question is asked often but every bike has a different setup and it was ok for a while. Do I need to rejett, adjust air mixture, any ideas would be helpful.
