$960 later and all I got to show for it was a freakin' loud pipe! Costs on Tuono's "performance modification": $300 for Leo Vince slip-on $270 for Power Commander $200 for dyno tuning $40 for K&N filter $150 for Aprilia Racing 2-to-1 header (bought off eBay) What do I get? A fookin' loud pipe. Yep. That's all I got. It makes some killer noise and that's all she wrote. I got the slip-on and the Akrapovic for Aprilia header hooked up and the bike ran like crap. Snatchy throttle responses at low range and a nasty flat spot between 5500 to 7000 RPM. Put it on the dyno and the power curve showed exactly what I felt, not to mention a loss of 4-HP and 2-lbft of torque - 112-hp and 64-lbft. Installed the PC and had it dyno tuned. The tuner said that's the best he could do without leaning the air-fuel ratio too much and make the bike run like crap. Dynoed it again and compared to bone stock set up (bone stock parts minus the derestricted airbox and exhaust baffle removed from stock can). The result was about the same as the stock setup. Actually the dip at 5500-rpm is a bit more with the current setup than from the stock setup, but thank goodness you can't feel it. So, almost a grand worth of work resulted in nothing but a loud *** pipe. It's time to get me one of those T-shirts and wear it proudly, I guess. However, my Aprilia guru said not to despair yet. He's going to sync the throttle bodies for me and play with the air-fuel mixture a bit more and then maybe some porting work on the heads, some internal polishings, Aprilia Racing chip to fool around with the cylinder timings, possibly some hotter cams and then he'll re-dyno tune the whole shebang for me, so at least the Power Commander won't go to waste. The moral of the story is LOUD PIPES SAVE LIFE. That's my story and I'm sticking to it.