Re: Cold air intake
Injen is probably the best bet. It goes all the way to your TB, eliminating the stupid resonator. I've been fighting with my stupid reso since I got my K&N. I should have gone Injen or Airaid or anything that eliminates that thing!
Cold air is denser than warm air. Put "cold" air in your TB, mix in some fuel, and you end up with more power.
Silver 2006 WK, 3.7, named Truck Norris© (my first mod), Pioneer DEH-X6600BT, K&N 77-1545 CAI, SRT rear sway bar, EnergySuspension bushings, Fastman TB.
The original code-name for the "Manhattan Project" was "Truck Norris"