Hey guys, I don't wanna sound like a ghetto squid boy but today I drilled out my stock pipes. Having a V-twin that sounded a little wimpy I've been thinking about this 'mod' for a while. Some of the guys over on the TLplanet have done it before so I got some tippers before proceeding. Other owners have dyno'ed their bike without any signs of damaging the power curve so I thought I'd give it a try!
I dremelled the welds on the three bolts that hold the Suzuki end cap on and the end cap slid right off.
I then proceded to make 1/4 drill holes into the inner baffle's endcap surface until it was around as loud as I thought sounded nice. I put the endcaps back on and screwed her right back in, thereby hiding all of the ugly drill holes I just put into the baffles endcap surface.
Results: I probably lost a bunch of backpressure and my fuel curves a little out of whack but I am giddy at the new sound my bike makes! To describe the new sound, it's not exactly deep and throaty hum, but more of a barky, crackly, sharper thumb. Whatever the hell sound comes out of these pipes right now is better than listening to valvetick