{"product_id":"holley-terminator-x-ls1-ls2-ls6-ev6-550-909","title":"Holley Terminator X, GM LS1\/LS2\/LS6, DBC, EV6 | 550-909","description":"\u003cp\u003eTerminator X puts complete control of a GM LS1\/LS6 engine in one compact ECU, replacing a junkyard controller with real-time fuel learn, self-learning fuel strategies, and Holley's proven EFI tuning technology at a budget-friendly price.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBuilt for GM LS1\/LS6 engines with 24x crank reluctor and EV6 injectors\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 for pressure sensors, nitrous activation, or a trans brake\u003c\/li\u003e\n\u003cli\u003eBoost control and nitrous control tables, plus advanced custom tables\u003c\/li\u003e\n\u003cli\u003eOn-board diagnostic LEDs for ECU power, engine run, wideband status, TPS calibration, crank and cam signal\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\u003cli\u003eIncludes 24x LS main harness, EV6 injector harness, ECU, main power harness, wideband oxygen sensor, I\/O harness, and vacuum adapters\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEngine: GM LS1\/LS2\/LS6\u003c\/li\u003e\n\u003cli\u003eCrank Reluctor: 24x\u003c\/li\u003e\n\u003cli\u003eIgnition Type: GM LS 24x\u003c\/li\u003e\n\u003cli\u003eInjector Connector: USCAR (EV6)\u003c\/li\u003e\n\u003cli\u003eDrive-By-Wire: No\u003c\/li\u003e\n\u003cli\u003eTransmission Control: None\u003c\/li\u003e\n\u003cli\u003eMAP Sensor: 1-bar\u003c\/li\u003e\n\u003cli\u003eHandheld Included: Yes, 3.5 in. touchscreen\u003c\/li\u003e\n\u003cli\u003ePart Number: 550-909\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTerminator X ECUs are designed to be mounted with the LEDs facing up.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat engines does 550-909 fit?\u003c\/h5\u003e\u003cp\u003eGM LS1\/LS6 engines with a 24x crank reluctor and EV6 injectors.\u003c\/p\u003e\u003ch5\u003eDoes it include transmission control?\u003c\/h5\u003e\u003cp\u003eNo, this version has no transmission control — fuel and spark only.\u003c\/p\u003e\u003ch5\u003eIs a handheld tuner included?\u003c\/h5\u003e\u003cp\u003eYes, a 3.5 in. touchscreen handheld with a calibration wizard is included.\u003c\/p\u003e\u003ch5\u003eHow should the ECU be mounted?\u003c\/h5\u003e\u003cp\u003eWith the diagnostic LEDs facing up.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What engines does 550-909 fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"GM LS1\/LS6 engines with a 24x crank reluctor and EV6 injectors.\"}},{\"@type\":\"Question\",\"name\":\"Does it include transmission control?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No, this version has no transmission control, fuel and spark only.\"}},{\"@type\":\"Question\",\"name\":\"Is a handheld tuner included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, a 3.5 in. touchscreen handheld with a calibration wizard is included.\"}},{\"@type\":\"Question\",\"name\":\"How should the ECU be mounted?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"With the diagnostic LEDs facing up.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":42418574426160,"sku":"GVMR_550-909","price":1449.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/diucjf3u1974_e4c2cb7c-f1f1-4ced-9357-49aa25c2d907.jpg?v=1758384719","url":"https:\/\/berryperformancesales.com\/products\/holley-terminator-x-ls1-ls2-ls6-ev6-550-909","provider":"Berry Performance Sales","version":"1.0","type":"link"}