BCB, what do you mean by “engine height is critical to keep lower settings: ? I also have a new P4 with the SHO, and I am having a little trouble getting it dialed in. I will be getting a new 25p fury to try next week since I can not get my rpms above 5,000. It came from the dealer with a 26p fury. Runs great at 66 mph, but I have to trim it way up and it gets squirlly around 68 mph. any thoughts or help would be great. Thanks, Ed