last night, me and a few friends went riding, so while they were checkin their preds before riding, i took the silencer assembly out. well i rode it around our pit for a few laps and came back, i noticed it had ALOT more power, but sounded like a damned banshee with whitebros pipes. the back pressure seemed good. damnit...gotta go to school

 

now take ur airbox lid off and put in a bigger main jet and adjust ur air/fuel screw and ull have even more power. a new air filter is a good idea 2