How much boost can you run on 91octane before having to switch to race gas?

Here's a quickie on my setup:
B18B GE sleeved to 2.0 - 9:1 compression
84mm Wiseco pistons
Probe Ultra-lite rods
RevHard Stage 2C
Hondata w/ RC 550's

Let's here from people who know what they're talkin' about. Not "I heard so-and-so runs 24psi on a stock block!" Just honest answers....no B.S.!!!

 

well, im willing to bet you max out ur injectors about the same time you have to switch over to race gas.