need suggestions on a tried-n-true octane booster. I just got my computer reflashed and tuned from T&J and need to run 93 octane from now on due to the timing advance. Well, in my infinite wisdom, i filled the car's tank with 87 octane before sending the computer out for the reflash/tune and now have a nearly full tank of 87 octane gas to burn up. So, I need something that will bump the octane closer to 93 until I get the tank down to a half. I can start adding the 93 to the tank then. Any help will be greatly appreciated!