I just got the LET v2 tune and boy is it way better then their previous tune. I remember Rob saying he and Inmotion did alot of datalogging and sharing back and forth to dial in his tune. I would try a custom dynotune or some serious datalog sharing with LET before switching and paying more money. Once I get my wb and some more mods I would like to get dynotuned and squeeze out the last of the hp.