I also plan to adjust the timing some (on the dyno though) to check what is the maximum power I can get at a certain degree. I know every Z is a little different and is recommended to do so on the dyno. I am sure that is where I should be sitting as well, but I sure as hell know it is not at this time. I hate that darn profec right now. Before it, on the jets I was running 14-15 psi all day long and ran great!!!