Originally Posted by
RX007CYM
Wait you say, no no it is a higher octane rating so it is good. Well, I am not tuned for it, nor am I going to attempt to have my car tuned again for a fuel that proves to not even be consistent. You see, in road racing, or any racing for that matter consistency and reliability are key.
another misnomer...it is still 93 octane, not higher. Just crappier gas blended with 10% ethanol to achieve a higher octane.
I too have always recorded my mileage on every tank. I didn't see nearly the drop you did though. I can't think that its the temperature or humidity causing a change as Virginia Beach in the summer is just as bad as tampa on both accounts. So, I'm wondering what controls your state has on the quality/percentage blend you are recieving.
I will also add, we've had lots of customers with turbo rotaries with no issues fuel related. I would state that all cars tuned on regular gas, get a new tune done.