Standard, off-the-shelf nitrous kits will not fit the 1999-2004 Ford Mustang GT. Due to a fuel system redesign, special components are needed to install a nitrous kit. ZEX is the first manufacturer to engineer application-specific kits for the Mustang GT that include all of the special parts needed for an easy, 2-hour installation. Along with the required Mustang-specific parts, these ZEX systems also feature the most technically advanced performance features of any system on the market. The systems use patented Active Fuel Control, which automatically adjusts nitrous fuel enrichment with bottle pressure so that the engine never runs too rich or too lean. ZEX Mustang GT systems also feature a patented electronic TPS switch for perfect system activation at wide-open throttle. Power settings are fully adjustable from 75-175 hp with the included tuning jets.