i am running short turn outs, no baffles and rejetted, and have lost no power, then againg i have the blaking kit and rebored, its quite loud, here is a vid of my trump out on ther road, mines is the one with high apes, as i pass the car you can hear the bike, vid is a bit long winded sorry..
http://www.youtube.com/watch?v=QISiJ_3F6JE
