Hey guys, I didn't see where this has been talked about much here, but I am curious. Since the hp/tq ratings go up or down based on the octane level (87/93) for the Mazda3 2.5t would it be safe to assume that you could hypothetically use higher octane fuel such as unleaded 100 octane (just happens to be offered at a gas station near by) and see higher numbers? Would the ECU be able to adjust by itself, or would it need to be supplemented by a tune to prevent knocking or detonation issues?