Has anyone installed any FPIK's, Intakes, or throttle body spacers? If so what are you opinions?
Anyone found a way to get better than 15-17mpg on a combined cycle?
Intakes aren't the answer for fuel economy. They tend to just give more of a sucking sound with very little if any horsepower gain. I know K&N make an intake, which was introduced recently. I haven't seen any spacers or intake manifolds. The Pathy isn't getting much attention from the after market, which sucks. It has the horsepower and ability to be a great offroad vehicle. Offroad.com has a project titan, but I haven't seen anything for the Pathy.
Increased tire pressure, grill blocking, removing the roof rack, removing excess weight and a light foot at lower speeds will all help.
For advanced at some additional cost look to H2O injection, warm air intake, various aerodynamic mods, lightening the vehicle, narrower tires and timing retardation.