I am heading late this winter up to have some mods on my 06 Hammer by Rylan at the VIC shop. While I am still debating whether to have cams installed, I am clearly going to have him place a better breather in than my K&M and I am going to have Rylan re install my PC III back in the bike (local dealer pulled it out and installed a stage one flash). I have RPW slashes on the bike. I would like to get a bit more HP out of the bike and more throttle response and yes I have purchased but yet to install my quarter turn throttle ring. Though a cold starter, after a couple of minutes, the bike runs very smoothly, no back fire and never a throttle blip problem, though the idle is now getting a bit low at cold conditions and will probably have Rylan clean the throttle bodies. MY QUESTIONS: 1) Does the difference in cost from an air box to torque tubes worth it? 2) Will as suggested by the name, torque tubes provide more torque relatively than an airbox? 3) Can I expect any problems with the use of torque tubes that I would not have with an air box such as clogging or need to clean more frequently? 4) Can I actually screw up a currently smooth running bike by making these changes as well as possibly adding CAMS? Thanks and any other input or suggestions are welcomed and appreciated. Before anyone asks what I am looking for by upgrading, the answer is beyond the continued reliability this bike has provided, I would like more torque and quick pick up speed at the lower end.