I am running a k&n filter, full system with a Yosh RS3 can, ignition advancer and dynojet kit. It is definiately worth it! I am running a 520 X-ring chain and Renthal sprockets as well (15/43) which has made an extra differance!. I still have the dynojet specsheet should you need to know what dynojet jets to run,just remember that the dynojet numbers are different form normal sizes as it measures flow rates and not size per say.
Regs
DEON CILLIERS
Regs
DEON CILLIERS