Have ridden the Vegas (with the new sound) daily since I installed the Basani Slash Cuts.
Running open loop I get slight popping when going from partial throttle to throttle off. Throttle off: no popping sounds. A perceived increase in power and acceleration, possibly because of the new sound.
Idle speed at start: 1000 RPM
Idle speed hot: 900 RPM
No hesitation, no sputtering, nothing but raw power and tractability.
I am a happy camper. For $500 and lots of wrenching got exactly what I wanted.
2011 Victory Vegas