[Drivesthebeast]

I got better fuel economy with all of the following:

AEM Cold Air Intake, Focus Central 60mm Throttle Body, Ford Racing 9mm Ignition Wires, Ford Motorcraft Platinum Spark Plugs, MBRP Cat-Back Exhaust, Ford 5W20 Full Synthetic Engine Oil.

I also got faster throttle response, and more mid-range torque. Just the intake on it's own won't make much difference. If you pair it with other stuff, it works even better.