Re: $5 quickshifter with PC3 USB
The R6S, or 05 earlier R6 only has 4 injectors though right?
The 06+ R6 has 8 injectors with the PCV only controlling the lower 4. While this would kill the lower 4, it won't kill the uppers meaning you will create a very lean condition (and the motor won't actually be "killed"). Ideally you always kill ignition for any sort of quick shifter, or rev-limiter to prevent lean conditions. I wouldn't recommend trying to do this on an 06+ R6.
07 R6, MJS Header, GYTR slip on, smog block offs, K&N, flashed ECU, PCV, AutoTune, -1/+2.