OK guys this is what I think I know, my notes are in Denver. 5:1 is safe and rich, 6:1 is leaner and a bit riskier. Running rich only looses a little HP, just don't go too rich, that has its own set of problems. How do you know the ratio? We used a very accurate scale, flowed each gas jet to get sets that flowed the same. Yes this implies that all #22 jets are not the same... We used baby food jars, a stopwatch and flowed and weighed as accurately as possible. Same with the N20. We put the bottle on the scale, flowed and measured, keeping bottle pressure stable at the number we planned to race. Be aware, N20 changes pressures quickly and goes gaseous at Bonneville temps. Some folks plan for gaseous, some plan for liquid. There is more VE in liquid. Then all you need to do is calculate so you run 5 lbs of N20 for every pound of enrichment fuel. Also be aware, the bottle gets cooler as you use N20 and the pressure decreases, so it you plan gaseous, and it goes liquid, you are now quite lean, plan on a hole in something.... if you are lucky, the decreased pressure of liquid will not get you too lean if you planned the higher pressure gas, that is also why 5 is better than 6. There is a big jump when it goes to gas, easy to tell. Seems like 950 is liquid, then 1175 its gas.
Hope this helps. Don't trust drag race kits at Bonneville unless they have gotten a lot better, if you go with their jet combos, turn the fuel pressure up a little beyond their recommendation.
Smart guys feel free to correct my memory as required.
See ya on the salt