Buddy just got a 2015 cat 800 done. Not many miles on it yet. But said it runs like a stock sled with that boost it box. And the fit and finish is the best he has seen. Another buddy also just did one with the guys at tss on a 14 pro. Said it's working good. Very nice kit. Just fine tunning it yet. Both guys had bd kits ordered. Got tired of waiting and getting told yup next month.