its funny i dont feel the wavetrac helping me at all at the track. on the dragon and such roads its extremely noticeable. but at the track my 60 ft times didnt change much . now the peace of mind i wont trash the diff during burnouts is priceless. weather , dr's getting big heat and better launches are whats getting me in the low 12's. strangly my trap times are climbing like crazy but low et is still elusive but slowly coming down ie: 12.1 @ 114 p/b and 12.2 @ 120 is the mph best!