| It all depends on tuning. Depending on engine size, you could probably produce 500whp with a gt35r on 91 octane gas. I've run 21psi on my 2.8l with pump gas, and hit 329whp and 405wtq at 17psi. With more tuning and better head flow, I'm going to get a lot more out of that. I have 80lb/hr (830cc/min) injectors, so I'll be good for a lot of power. It all depends on tuning, but I'd say you could run 35+ with 91 octane, but it also depends on your static compression (you cant run 35psi on a 10:1 compression engine, but on a 8:1 you probably can).
matt
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