Which power commander you running? III or V?
Velocity stacks are way more expensive than the sprocket.
I'm running the MJS Header, GYTR pipe, and using the PCV map that Mike from MJS preloaded on it, along with the -1/+2 sprockets, and am very happy with it. The sprockets make the biggest difference, and it's not going to hurt the bike to spin a little higher RPM. Even Yamaha says anything under 8k RPM is fair game for extended periods. I cruise on the highway right at about 7900 RPM with my sprockets.
Velocity stacks are way more expensive than the sprocket.
I'm running the MJS Header, GYTR pipe, and using the PCV map that Mike from MJS preloaded on it, along with the -1/+2 sprockets, and am very happy with it. The sprockets make the biggest difference, and it's not going to hurt the bike to spin a little higher RPM. Even Yamaha says anything under 8k RPM is fair game for extended periods. I cruise on the highway right at about 7900 RPM with my sprockets.