I'm looking to get a new exhaust, then rejet and replace the stock airfilter. I'm running a 2000 WR400F in full supermoto trim. I need it to run great all around. Right now it's running like [@#$%&!] with the stock pipe unplugged. The jets are all fubared and the stock filter seems to be choking it up. Looking for information on your pipes. What's good, what's bad about whatever you're running. Then maybe list your jetting setup and what air filter you run. Thanks, Everett I tried to search, was useless.