Last Sunday I got bored and.........

Last sunday I got bored and decided to do a little home modifying, I got out the plasma cutter took off the end cap of my stock pipe and started cutting. Next thing you know I didn't have a spark arrestor anymore. It actually sounds pretty decent but it almost feels like I lost some bottom end??? I am not sure about that but my real question is will it help it to jet the carb and put in a k&n now. Just thought I would ask you guys what you thought any thoughts are appreciated.

u could be runnin lean, and takin our restriction messes up back presure on valves, try richin it up.

If I need to jet it what size of jet would I need?????????

i went to 155 when i did the same thing. but i think it was rich. get a 152 and 155