Hello members, I purchased my R3 about 3 weeks ago and this is my first 2 cyl. engine since I owned a Kawasaki LTD 440 in the mid 80's. I have owned many 4 cyl. bikes and a 20108 Yamaha WR250R single cyl. I always install exhaust and a fuel programmer on every bike I own for the performance enrichment and a nicer sound. I usually wait until the warranty is up before upgrading, but this bike seems fairly weak and the exhaust and air box are choking it so I will go ahead and do the upgrades soon. Has anyone installed the Yoshi Stainless Full Exhaust with the Power Commander V Fuel & Ignition controller? And if so how do you like the performance?