i have just over 1000 miles on my car, and around 400-600 miles I'm not sure what it was but i had better performance then i do now. i haven't done any mods to the car that would influence a change in performance. the only change that i can fathom that would change performance is the fuel i put in. every gas station around here only has 93 octane. but in the 400-600 milage I'm pretty sure i put in 91 octane out of town. has any one else experienced this or has any input. hoping for some solutions here. haha