i have the martin brothers daisy cutters...i LOVE the look, but not that impressed with anything else...although I have to be honest and tell you that it may have nothing to do with the pipes.
I took the baffles out to make them sound better, but I'm getting LOTs of popping and backfire. A friend told me to weld a large washer to a bolt and bolt it in the same hole that the baffle came out of ... but not that much better, but some.
The other thing is that it's very sluggish...or whatever the technical term is...sputters, acts like it wants to stall on occasion, etc...but think this is more about jetting and tuning than anything else. I live in a small town in southern AZ....and NO ONE knows anything about this bike or how to get it working properly.
Bottom Line: LOVE the look of the pipes, but having problems.