Matt,
I didn't say anything about filters. The K&Ns will get you some power.
The smooth tubes won't get you anything but a cleaner look with some added chrome or color, a little louder intake and perhaps a convinient place to shoot the nitrous.
I like smooth tubes, I have them. I just don't believe that a small handfull of hp out of 450 is within the measuring tolerance of any dyno.
"They will not make any power that can be measured."
That's what I said. That's what I meant.
The dyno will for sure measure things that the driver will never feel SOTP. If the dyno can't see the change, you will never feel it and it will not show up in your 1/4 mile times.