This external Gasoline Direct Injection controller pairs with a Terminator X or Terminator X Max ECU to add control of GM Gen V LT4, LT1, L83, or L86 direct-injection engines, giving the end user tuning access to factory injectors, variable valve timing (VVT), and the factory fuel pump.
Specifications:
- Engine/Platform: GM Gen V LT4, LT1, L83, L86
- Compatibility: Only compatible with Terminator X or Terminator X Max ECUs
- Function: GDI and VVT control
- Connection: Plug-and-play, LED status indicators
- Product Type: GM GDI Controller
- Warning: California Proposition 65
- Part Number: 554-150
To identify whether your engine needs the early or late kit, check the fuel pressure sensor located behind the intake manifold: early sensors use a 4-pin connector, late sensors use a 3-pin connector. Not recommended for marine use; acceptable for off-road use with proper wiring management, kept dry and protected from heat.
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What ECUs is the GDI controller compatible with?
Only Terminator X or Terminator X Max ECUs.
What engines does this controller support?
GM Gen V LT4, LT1, L83, and L86 direct-injection engines.
How do I know if I need the early or late version?
Check the fuel pressure sensor behind the intake manifold: a 4-pin connector is early, a 3-pin connector is late.
Can this be used on a marine or off-road vehicle?
Marine use is not recommended. Off-road use is acceptable if the controller is mounted in a dry, protected location with proper wiring management.
Is this legal for street use?
No. It is legal for sale and use only on Racing Use Only vehicles — competition vehicles not registered or operated on the street.
