Thinking of swapping mufflers but got a question pertaining to my 340

Lustle said
Needing back pressure is a myth that needs to die. Along with:

Big valves kill torque.
Solid cam's need constant maintenance.
3/4 race cams.

And etc etc.

Damn. Lustle is on a roll!

Just wish you would have filled in the etc's a bit more. There are plenty of golden cows that need to be gored.