I just used the superchips flashpaq and tuned it to 91 octane. I drove it around and it seemed a lot more responsive. When I got back home I pluged the SC back in and checked out the spark advance setting. I saw some information I did not want to tap into so I just ok'd my way out of that menu. I drove it again and it seemed slugish. Anybody know how advanced the the 91 octane performance level is? Im thinking about just re-installing all over again.