Kris did you miss the part where he posted...
"Dynoed with K&N in stock airbox 168.7hp and 156.5 torque.
Dynoed with open K&N (same setup as KKM) 172.5hp and 156.1 torque"
That's +4HP for the KKM over the K&N...
That's also with NO HEATSHIELD. I bet a good heatshield is worth another few ponies (since it's know to drop air temps by 30 degrees or more!)
So there's your comparrison!