I live in AK and ride Cantwell and Summit all the time. I'm on a 09' CF1000 and was running just an MBRP last year and was having trouble with some low end lugging and rich condition, I determined that the back pressure from the MBRP was the cause, I love my MBRP's, I've been running them for years on everything I've owned, I wasn't just changing. I have figured out through testing on my own that a set of reeds, I preffer Boyesen, and a good Ypipe, I preffer BMP, with the stock pipe and MBRP Can is the best power across the power band. I did run the BMP pipe and can with this set up and it did work ok but I was able to see the constant flow of the rpm's with the stock pipe and MBRP better. Plus the heat shield of the stock pipe help control the building of heat, but that is on the 1000cc, and not the 8's. Good luck...