This Is A Great Mod, If For No Other Reason Than That You Get Rid Of All The Fan Noise From The Stock Fan.An Electric Radiator Fan Can Offer Better Cooling And More HP Due To The Removal Of The Parasitic Drag Of The Stock Crank-Driven Fan.Flex-a-Lite Claims 17 HP And 20 Ft. Lbs. Power Gains At The Wheels. The Real Numbers Are 10-11 RWHP.Installing A 170 Thermostat (Stant-13967) At The Same Time Can Provide Additional Performance Gains.I Used TechFlex Braided Fiberglass Wire Covering for All The Wire Runs. This Product Is Very Similar To The Braided Covering On The Intercooler Fluid Hoses.(2005 F150 FX4 5.4L, With A Whipple W140AX Supercharger)