Holley EFI Terminator X Foxbody Mustang 5.0 EFI Kit – 550-937F

Upgrade your Foxbody 5.0's engine management with the Holley EFI Terminator X 550-937F. This Ford-specific kit provides fuel and ignition tuning, adaptive fuel learning, and a 3.5-inch touchscreen for setup, gauges, and datalogging.

• Foxbody engine wiring with Ford TFI ignition and EV1 injector connections.
• High-impedance injector control, integrated 1-bar MAP sensor, and Bosch LSU 4.9 wideband feedback.
• Four configurable inputs and four outputs, with boost and nitrous control capabilities.
• Engine control only; this kit does not provide electronic transmission or drive-by-wire throttle control.

Included: Terminator X ECU, 3.5-inch handheld, main engine and power harnesses, TFI adapter, EV1 injector harness, wideband sensor and adapter, input/output harness, oxygen-sensor weld ring, MAP hose adapters, coolant and intake-air temperature sensors, and ECU mounting bracket.

Fitment: 1979–1993 Mustang 5.0 applications. Holley specifies compatibility with 1987–1993 factory 302/TFI combinations. Factory Ford TPS and IAC connectors require wiring and are not included. Boosted engines require an appropriately ranged external MAP sensor.

Injectors, distributor, intake manifold, fuel pump, regulator, fuel lines, TPS, and IAC motor are not included.

Manufacturer use classification: Racing-use-only vehicles; not for emissions-controlled street vehicles.