Hi ! I'm want to put a pipe on my YZ-426, and would like to have your sugestion on whitch pipe will be the best for this bike. I try a search but don't see anything. I use the bike for trail riding , motocross track,supermoto and ice racing. I would like to have a pipe whith a lot of snap, and if possible one with more low,mid and overrev than the stock unit. How many hp can you get from an aftermarket pipe ? Please give me your sugestion.