KZ 750 straight pipe exhaust question

one question.. I have a 750ltd and I was wondering if anyone has done this? I talked to a guy that I'm getting to work on my bike and I asked him about this idea I have. He told me that Jap bikes a somewhat more fickel then american bikes and it makes it harder to do this because the bike needs some backpressure. He mentioned Step tuning my exhaust but I dont know if that would solve the back pressure problem. I was just wondering if anyone has done something like this? thanks for the help.

You might want to shoot a PM to Sweet Back .
He's running straight pipes on his X-Police KZ1000, and should be able to tell you all that's needed.