I got into a debate with my local Honda shop here in san diego (Hontech Automotive...they're EXCELLENT). He was convinced that the highest compression that would run on 91 octane gas was 10.5, and even that was pushin it. But I've seen people run 11:1, and even 11.5:1 in street hondas, and they all claim to run pump gas. Anyone here who can beat down this argument once and for all?