Whats up guys. I just bought a DS that came with a custom made pipe. It's a little loud, it kinda looks like the end of a chopper pipe. But Im thinking about keeping it. It must have almost no resistance in flow. What size jet do you guys recomend I install? I will be using a K&N with the cover on.

Thanks

 

Check out the "DS jetting/mods data" listing. Buttfungus has a website with alot of info that might help you out on jetting for you elevation.