Installation Time
(approx) 45 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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$2,359.95 kit
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Features, Description, Q&A, Specs & Installation
Comprehensive Engine Control. The Holley EFI Terminator X MAX LS Late Truck Kit with 6L80 Transmission Control is a high-performance powertrain control module specifically engineered to manage GM LS engines paired with 6L80/6L90 transmissions. It delivers precise fuel, spark, and transmission management to optimize engine performance, drivability, and shift quality. This system is ideal for users looking to integrate advanced EFI and transmission control into their late-model GM trucks.
Construction and Appearance. The unit features a rugged black housing designed for durability in demanding automotive environments. Its internal components are engineered for high reliability and compatibility with modern LS engines and advanced transmission controls. The integrated 3.5-inch touchscreen provides a clear, user-friendly interface for tuning and monitoring engine parameters.
Installation. Installation is designed to be straightforward with plug-and-play wiring harnesses and loose wires for essential connections, requiring no drilling or complex modifications. This kit is suitable for enthusiasts with basic wiring skills and offers an integrated handheld tuner to simplify setup.
Warranty. This product comes with a one-year limited warranty covering defects in materials and workmanship.
Application. Fits Universal; Some Adaptation May Be Required.
Holley EFI 550-918-6
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation Info
Installation Time
(approx) 45 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
What's in the Box