yes, at mir i was only running 95.5 octane though. at pittsburgh when i ran a little faster with 1800da i ran 98 octane, it seemed to make a bigger difference. i was trapping 114.45mph in higher DA than when we were at MIR. i just can not get the 60' times you can i am stuck in the 1.85's

i just ordered another gallon too lol, i went out and checked my supply and i only have 24oz left!

what i do is fill up my tank, add 2 bottles and drive to the track (about 180 miles!) then by the time i get there the car is used to the higher octane in the tank and adjusts the "tune" to accommodate for it.