at the 17psi im running (still havent turned it back up after the new brpv) rich is dipping into the 10's on the afr gauge. i need to take some jet out of the primary but its just been to cold to mess with it.
I have just the opposite problem, @10 pounds of boost, it goes dead lean (18:1) at full throttle when I open the secondaries... Gotta fix that! I'm thinking go up 10 sizes (78 to 88 on the secondaries.) It's fine, on the primaries 12:1, cruaising.