What did Boost-it say you should run for octane, with 7 lbs at 6000 ft ? Listen to them. With the XIC box they don't have the timing pulled. You start hitting det a lot and its going to cost you a engine.
They run 25% 109 octane or C111 and rest or 75% pump gas (91). That puts you at an overall of 95.5 octane total. Running that same ratio but with Av gas and 94 octane puts me at 95.5 octane as well.
In the end I know putting some extra av gas in is safe cheap assurance over having to do an engine and so I will continue to do that