Well.......... I've now had my 2015 Fireblade just over three months. This was the replacement for my 2011 Fireblade. Basically I've fitted the exact same items to the 2015 blade as I had on the 2011 bike. Power Commander V RaceFit Black Edition O2 Sensor Eliminator And at the moment I've just blocked the Pair Valve (Marble in the downpipe from the Air Box) So, after three hours on the dyno, how did it compare with my 2011, which at that the time of mapping had about 2k miles on it, compared with my 2015 that has about 1.5k on it. Here's the graph from my 2011 bike, carried out by Crescent Honda at Verwood and tuned by their top guy who also sets up their race bikes........... This was my first 1ltr bike and I learned so much. As you can see, I ended up with 162.5 bhp & 80lbs of torque....... Rode really nice, but being relatively new (Had 20 years away from bikes) to big bikes I was amazed how easy it was to ride. So....... After Honda claimed a very slight power increase on the 2014/2015 bikes of about 2bhp what was the difference, having fitted exactly the same items. The results show a gain of 1.5bhp (164bhp compared to the 2011's 162.5bhp), but a very slight loss in torque of 1.8 lbs (78.16 lbs Torque on the 2015, compared to 80. 02lbs on the 2011). But you can quite clearly see the smoother and better power delivery in the lower rpm range (2k - 6k rpm range). Ambient temperature was 19deg. Humidity 93%....... This didn't help...LOL. All off this means not a lot really, and I fully appreciate these figures are altered by weather conditions, ambient tempreture, humidity, and dyno's vary over time. Today we had an ambient temperature of 19 degrees but 93% humidity, not the best for giving big figures...... But Hey Ho. But at the end of the day, the ride is very smooth, no flat spots, no hesitation, and the biggest difference over stock is how smoother it is at low rpm. My bum dyno cant tell any difference in acceleration, but I can tell the difference in the smoothness of the power delivery, as said especially at low rpm. Money Well Spent for me, and it just makes the bike even easier to ride. Love it.