Does the PCV really cures the hole between 5-9K

[crazy4bikes]

let me know if it is.

[symplee511]

Huh Huh!

[yzfr1mike]

NO. You need to replace the stock exhaust to eliminate the butterfly valves, which are throttling the engine at those RPM's. From what I can learn, almost any of the full exhausts will fill in this flat spot. I used an AK full exhaust on mine and picked up 12 HP at 7500 rpm.

Your bike will run smoother with the PC5.

Mike