We have been running our pure logic boxes with the first three settings almost all the way down, and the blue green boost setting at about 3 to 3.5for 14 lbs of boost at summit. With the surge tank fuel system you will have plenty of fuel for high boost. I have been just running 12 to 14 lbs on av gas and it has been really fun, I will run higher boost when I put on my new drivers. I rode Turnigan and seward a few weeks ago with the same fuel settings, it ran really good. The pure logic box runs really good all the way through the throttle, I still mess with my settings and fuel regulator some just to try new settings. As far as the yellow blue and red blue settings I have not messed with them much seems to run good in the settings they come with. I think the prologger is awesome, I could not imagine tuning any other way. Being able to adjust the boost with a push of the button is great. It is nice just being able to log every run without trying to watch your gages while your flying up a hill.