Holley EFI Terminator X Handheld Controller 553-201 range-technology 4 V8 1981 - 1982

4 V8 1981 - 1982 Chevrolet Malibu   267/4

3L V8 1968 - 1973 GMC C25/C2500 Pickup 307/5L V8 1969 - 1974 Chevrolet C10 Pickup 350/5

7L V8 1986 Chevrolet C20 Suburban Silverado 350/5

1 L6 1968 - 1973 GMC K35/K3500 Pickup 307/5 V8 1969 - 1974 GMC K35/K3500 Pickup 350/5

Holley EFI Terminator X Handheld Controller 553-201 range-technology 4 V8 1981 - 19823. 5 in. LCD Touchscreen Features: Full Color, Backlit 3. 5? Touch Screen LCD1 Laptop Free Tuning changes to help optimize mileage, driveability and performance2 Basic Tuning options allow simple adjustments of Basic Fuel, Fuel Learn, Basic Idle, Spark, and More! 3 System Tuning options allow modifications to Outputs, Engine Setup, Ignition Setup4 Advanced Tuning options allow fine tuning of Fuel, Closed Loop, Learn, and Idle (including IAC parameters