Installation Time
(approx) 6 Hours
Difficulty Level:
Mechanical expertise or professional installation required.
Installation Guides
No guide available for this part yet.
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$3,849.95 kit
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Features, Description, Q&A, Specs & Installation
Advanced Engine Control. The Holley EFI Terminator X Max GM Gen V LT4 Direct Injection Kit with 6L80E/6L90E Transmission Control; Late Application is designed to provide comprehensive engine management and transmission control for GM Gen V LT4 engines. It offers users full tuning capability with advanced features such as drive-by-wire throttle body control and self-learning fuel strategies, making it an ideal choice for enthusiasts seeking improved engine performance and control.
Construction and Appearance. This EFI system features a robust, textured black finish designed for durability and longevity. The housed electronics include a genuine Bosch LSU 4.9 wideband oxygen sensor and integrated sensors such as a 1bar MAP. The handheld tuner features a clear 3.5� display, facilitating easy interaction during calibration and tuning.
Installation. Installation is streamlined with a plug-and-play harness that connects directly to the factory direct-injection injector sub harness, minimizing the need for complex wiring or modifications. No drilling is required, making it accessible for professional installers and skilled enthusiasts alike.
Warranty. This EFI system comes with a manufacturer's warranty to protect against defects and ensure confidence in product reliability.
Application. Fits GM Gen V LT4 engines with late di fuel rails and supports GM 6L80E and 6L90E transmissions. This kit is intended for non-emissions controlled vehicles only and is suitable for engine sizes from 5.3L V8 to 6.6L V8. It is not legal for use on emission-controlled vehicles.
Holley EFI 550-1634-6
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation Info
Installation Time
(approx) 6 Hours
Difficulty Level:
Mechanical expertise or professional installation required.
Installation Guides
No guide available for this part yet.
What's in the Box