My 2003 Yamaha YZFR1 Full Custome Tune/Dyno. Mods are Simple but yet Stuning thanks to the dyno tune. MODS: Full 2 brothers race exhaust , Air Box mod with K&N high flow filter, NGK iridium Spak Plugs , 530 o Ring Chain, Plate Blook Offs and Power Comander 3. 91 Octain.