Hondata

Follow up question, I know with some of these tunes you can see slightly improved mileage (when you keep your foot out of it). Has anyone paid attention to this to determine if that is the case with the stage 1 on this car?

Is the stage 1 flash able to perform on 87 octane or is 91 the minimum? This is my first Honda so I am a bit of a newbie with these stuff. Are there any other motor, intake or exhaust changes required?