I had a Boondocker turboed YZ450F for the 2013-14 season and for last season I had a Boondocker KTM450 and love the power. The new turbo kits have no power loss in the bottom end and they have a very smooth power band. I still have both turbo kits. Not sure I could ride a stock bike again after riding with the turbo. 90% of the riding I do is tree riding and yes stock bikes can go where I go but not in the deep powder and up the steep hills.
I remember a slightly different version, two dudes on turbo's watching the stocker tear it up!
Come out and ride dirt! I just took the turbo off Eriks bike and plan to rip some single track this weekend.