I wound up going up 2 sizes and dropping a clip one notch down. Seems to be spot on. Might hit the rev limiter a tad quicker but I don’t really think it hits it in fifth. I have zero soot in my tailpipe so I was just curious how many have no soot at the opening.I'm guessing it wont be much, maybe one size. Let us know how it seems to you.
I recently purchased one for I believe yfz450, I have yet to install it since I'll be using the box, are you using your airbox or eliminating it?I recently installed it and wondering how much of a change it was in jetting for you guys after switching from pro design foam filter and 400ex tube