exhaust problem

[lil_watz_ex]

I have a white brothers exhaust on my 400ex and it has the closed tip. I was wondering if I took the bolts off and opened the tip if it would cause problems. I tried this once and love the sound so much more but I don't want to mess anything up with my bike. If you have any advice let me know. Thanks

[REDRIDDER]

are you talking about an e-series? yes you can run it with no tip IMO it makes it feel slower.

[lil_watz_ex]

yeah it is the e series

[XXXRACER165]

You can run the pipe open if you want but I wouldn't. Lots more noise, and less power.

[my88r]

leave the disks and the spark arrestor. you will be better off either way.