Holley's Coyote Ti-VCT Control Module unlocks twin independent variable cam timing on a 2011-2017 Ford Coyote engine, whether it's a crate engine or a junkyard pull with locked cams. It communicates with the Holley EFI ECU over CANBus and comes preloaded with stock cam position tables for optimal drivability right out of the box, with user-programmable tables for fine-tuning aftermarket Ti-VCT camshafts.
Specifications:
- Product Type: ECU Assembly (Control Module)
- Sub Category: Control Modules
- Cam Control Range: Down to 400 RPM
- Timing Accuracy: Matched within 1 degree
- Diagnostics: 4 built-in diagnostic LEDs for cam/crank sensor faults
- Compatible ECUs: HP EFI, Dominator EFI, Terminator X, Terminator X Max
- Requires: Main Power Harness 558-319; Main Engine Harness 558-110 or 558-122; Ti-VCT Sub Harness 558-124 or 558-125
- Part Number: 554-145
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 engines does the 554-145 control module work with?
2011-2017 Ford Coyote engines, including crate engines and junkyard pulls with locked cams.
What other harnesses do I need?
A Main Power Harness (558-319), a Main Engine Harness (558-110 or 558-122), and a Ti-VCT Sub Harness (558-124 or 558-125).
Which ECUs is it compatible with?
HP EFI, Dominator EFI, Terminator X, and Terminator X Max.
Is this legal for street use?
No — it's legal for sale and use only on Racing Use Only vehicles that are never registered or driven on the street.

