D&D has about the best Y-Pipe out there that I've heard about. Check it out at
http://www.ddracing.com/03-cat_search_show...&Cat_ID=108 If you add the y-pipe you shouldn't have to do anything with fuel; not sure if the 1K has the probs that the 700 did with rich fuel, I added a fuel reducer to take care of that. Your 1K brethern should be able to lead you in the right direction. The boondocker comes in handy to add or reduce fuel at different RPMs and to regulate NoS. There are several other products out there that our fellow Arctic Chatters are using. Go through all the posts and read...you'll learn allot!!!
From D&D: Stock Dyno and they screwed around with adding air; they couldn't pull extra HP...leave it alone until some of the pros around here figure it out.
Click to view attachment D&D Y-Pipe Dyno: M1000 Trail Port /Stock Pipe/D&D Y-Pipe Dyno Test Comments-This test was done with stock Y pipe,2 degree timing key,Stock Head,stock reeds,stock air box.We did need to add fuel at 7300 & at 7800 with the boondocker.
Click to view attachment