{"product_id":"holley-terminator-x-max-gen-iv-truck-ls2-ls3-550-918","title":"Holley Terminator X Max, GM Gen IV 4.8\/5.3\/6.0 Truck \u0026 LS2\/LS3, EV6, 4L60E\/4L80E | 550-918","description":"\u003cp\u003eTerminator X Max puts complete control of a GM LS Gen IV 4.8\/5.3\/6.0 truck engine or LS2\/LS3 in one compact ECU, replacing a junkyard controller with real-time fuel learn, self-learning fuel strategies, and Holley's proven EFI tuning technology, plus 4L60E\/4L80E transmission control.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBuilt for GM LS Gen IV 4.8\/5.3\/6.0 truck engines and LS2\/LS3 with 58x crank, 4x cam, EV6 injectors, and 4L60E\/4L80E transmission control\u003c\/li\u003e\n\u003cli\u003eReal-time fuel map learn takes the guesswork out of tuning the base fuel table\u003c\/li\u003e\n\u003cli\u003eHigh-impedance injector drivers safely power most stock LS and Holley EFI injectors\u003c\/li\u003e\n\u003cli\u003eBosch LSU 4.9 wideband oxygen sensor included for accurate AFR reading and tuning control\u003c\/li\u003e\n\u003cli\u003eOn-board 1-bar MAP sensor, ideal for N\/A or nitrous combinations\u003c\/li\u003e\n\u003cli\u003e4 programmable inputs and 4 programmable outputs for fans, boost control, nitrous, and more\u003c\/li\u003e\n\u003cli\u003eBoost control and nitrous control tables, plus advanced custom tables\u003c\/li\u003e\n\u003cli\u003e3.5 in. touchscreen handheld with calibration wizard, internal data logging, and customizable gauge display\u003c\/li\u003e\n\u003cli\u003eCompact ECU mounts virtually anywhere (diagnostic LEDs must face up)\u003c\/li\u003e\n\u003cli\u003ePlug-and-play compatible with Holley EFI gauges, shift lights, modules, and digital\/pro dashes\u003c\/li\u003e\n\u003cli\u003eFree EFI tuning software for full laptop access\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEngine: Gen IV GM Truck 4.8\/5.3\/6.0 and LS2\/LS3\u003c\/li\u003e\n\u003cli\u003eCrank Reluctor: 58x, 4x Cam\u003c\/li\u003e\n\u003cli\u003eInjector Connector: EV6\u003c\/li\u003e\n\u003cli\u003eTransmission Control: 4L60E\/4L80E\u003c\/li\u003e\n\u003cli\u003eHandheld Included: Yes, 3.5 in. touchscreen\u003c\/li\u003e\n\u003cli\u003ePart Number: 550-918\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot recommended for 4x4 applications with electronic transfer cases, or for 4L6X transmissions from model year 1995 or earlier. Not intended for marine use, though it can be used off-road with proper mounting and wiring protection.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat engines does 550-918 fit?\u003c\/h5\u003e\u003cp\u003eGM LS Gen IV 4.8\/5.3\/6.0 truck engines and LS2\/LS3, with a 58x crank\/4x cam reluctor and EV6 injectors.\u003c\/p\u003e\u003ch5\u003eDoes it control the transmission?\u003c\/h5\u003e\u003cp\u003eYes, it includes 4L60E\/4L80E transmission control.\u003c\/p\u003e\u003ch5\u003eIs a handheld tuner included?\u003c\/h5\u003e\u003cp\u003eYes, a 3.5 in. touchscreen handheld with a calibration wizard.\u003c\/p\u003e\u003ch5\u003eCan this be used on a 4x4 vehicle?\u003c\/h5\u003e\u003cp\u003eIt's not recommended for 4x4 applications with electronic transfer cases.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What engines does 550-918 fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"GM LS Gen IV 4.8\/5.3\/6.0 truck engines and LS2\/LS3, with a 58x crank\/4x cam reluctor and EV6 injectors.\"}},{\"@type\":\"Question\",\"name\":\"Does it control the transmission?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, it includes 4L60E\/4L80E transmission control.\"}},{\"@type\":\"Question\",\"name\":\"Is a handheld tuner included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, a 3.5 in. touchscreen handheld with a calibration wizard.\"}},{\"@type\":\"Question\",\"name\":\"Can this be used on a 4x4 vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It's not recommended for 4x4 applications with electronic transfer cases.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":42418574655536,"sku":"GVMR_550-918","price":1849.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/terminatorxmax_v41974_973e8098-fa25-42c5-8e1d-e762dc57cb91.jpg?v=1758384743","url":"https:\/\/berryperformancesales.com\/products\/holley-terminator-x-max-gen-iv-truck-ls2-ls3-550-918","provider":"Berry Performance Sales","version":"1.0","type":"link"}