Originally Posted by Zecatfish
Stock timing curve on the 550 retards about 6500 so you will not want to rev it bast redline.
From 6500->7000 it goes from 36* timing to 5*, that is why it fall flat on top.
From what I've read the Hyperpak cures that, and will rev till it blows up I guess.
Webcams: I read someplace where a fellow changed out to the Mid-Range cam and the the power increase was great, but then he had clutch issues and was going to R&R the clutch discs. Last I seen him post on it. So nothing more is available and I hadn't seen anymore reviews in the power change.
I believe I read about the clutch slipping problems too on a T-talk thread as well. Granted the XT was never meant to be a hotrod
Cleaned up and painted my XZ550 shock. Now I have to draw up the plans for the mount.