get a hmf exhaust and every1 is saying get a triangle snorkel all it is is 2" pvc pipe u can pick up at home depot so dont spend hundred plus on a triangle snorkel go get u some pvc pipe and do it ur self for about $30 lol and on ur bike if u get the hmf it should come with a main jet(size 135) put that in and mess with the air/fuel mixter screw and it will run awesome i bought a dynojet kit and i put it on and i dont like it compared to the 135 that came with the exhaust so i jus took it off so dont worry about buying the dyno jet kit ,good luck