Practice, practice, practice. You will be surprised how much time you can shave with little changes and track time. I ran my truck in June and my best 1/4 mile was a 13.20 . On the same run my 1/8 th was 8.38 . I've been testing on a local 1/8 th track and have improved to an 8.11, It's going to be much cooler tomorrow night and with more weight reduction I'm really hoping for a 7.999999 . If I reach my goal, I'll have shaved about .4 off my 1/8 th time with no changes in tuning, just seat time and weight reduction and playing with tire pressure. I dont know what this improvement equates to in 1/4 mile but I should be in the 12's. irrc my first run on this tune was somewhere around the 13.50 area.