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Vehicle Info Needed558-510 TI-VCT EFI Harness Kit
Ships on 09/09/2026
Lowest Price GuaranteeFeatures:
- Plug and Play with Holley Dominator or HP ECU and TI-VCT Coyote Controller
- Labeled connectors
- Terminated connectors for use with 1999-2004 Ford TPS and IAC using cable throttle body
- Power Tap Connector provides a convenient source for power and grounds when adding additional sensors or actuators
- (2) CAN connectors for optional accessories (ex. Holley EFI Digital Dash)
Complete System Requirements
- Coyote Ti-VCT Control Module (#510-554-145)
- Sub Harness
- 2011-2012 engines use #510-558-124
- 2013-2017 engines us #510-558-125
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Utilize Twin Independent Variable Cam Timing Control in Modern Engine Swaps
Holley EFI has designed a system to control the Ti-VCT function for Ford Coyote engines that have been swapped in non-factory applications. When compared to an engine with the camshafts locked in place, gains of 90 ft.-lbs. of torque at 3700 RPMs can be seen. Main Harnesses come terminated with Ford TPS and IAC connectors, making it easy to convert from a DBW throttle body to a cable throttle body, if desired. High-speed data transfer and diagnostics are possible by the CANBus style communication between a Holley EFI ECU and the Ti-VCT control module.
