Dont do it if you ride mountains! I tried their y-pipe on my m7 and the hooks were made of too small guage wire and broke of after a single ride. They did have good customer service and sent me another but the same thing happened on the second pipe. Hopefully they fixed that problem it was a nice y-pipe other than that fit and welds were all good.
Not a 1000 but I put a d&D pipe on my 09 m8 and I didnt really notice to much of a power diffrence. But it sure did make it louder. And no fuel controller needed on my sled.