Hey Dale
I have short Triumph off road pipes and removed the last (visible end) baffles on each side using a 1 3/4" hole saw.
Sounds good but not too noisy - certainly no louder than nearly every Harley on the road! (or a certain Polish guy over here with Epcos who is currently holidaying in his homeland!!
)
In September, I have to put the old pipes back on for the government MOT test (roadworthyness) and while they're off, I'm considering drilling holes in the front baffles - just to see what happens
Either putting a large hole saw down or removing the end baffles completely gives a nice sound, is what I'm saying.
Edit: It didn't screw up the running of the bike either (jetting etc).
