Please DO NOT PUT DRAG PIPES ON YOUR BIKE!!! You will loose most of your low r.p.m. torque, and that is where you do most of your riding. Drag pipes make power in the upper r.p.m. range, hence the name. I realise that you have your own reasons for wanting to put them on but trust me from a driveability and performance standpoint nothing is worse. I deal with this issue every day.
If you do put them on put a baffle in them. That makes them sound like crap but at least you'll regain some low end power. My advice to you would be to buy a good 2 into 1 system. This way if and when you decide to do any upgrades to your engine you will already have a good pipe on the bike.
