{"title":"EFI Systems \u0026 Conversion Kits","description":null,"products":[{"product_id":"holley-550-656-dominator-efi-kit-ls1-ev1-trans-control","title":"Holley Dominator EFI Kit – LS1 Main Harness w\/ Transmission Control (EV1 Injectors) - 550-656","description":"\u003cp data-start=\"830\" data-end=\"1217\"\u003eThe \u003cstrong data-start=\"834\" data-end=\"872\"\u003eHolley Dominator EFI Kit (550-656)\u003c\/strong\u003e is the ultimate engine and vehicle management solution for high-performance LS builds. Designed for non-emissions street vehicles and race applications, the Dominator system offers nearly unlimited control over fuel, spark, transmission, boost, nitrous, water\/meth injection, drive-by-wire throttles, and data acquisition—all from a single ECU.\u003c\/p\u003e\n\u003cp data-start=\"1219\" data-end=\"1635\"\u003eWhether you’re running a naturally aspirated LS street car, a turbocharged drag setup, or a nitrous-assisted track build, the Dominator EFI system eliminates the need for multiple standalone controllers. With integrated electronic transmission control, advanced boost strategies, self-learning fuel tables, and extensive I\/O expandability, this system adapts to virtually any performance combination you can imagine.\u003c\/p\u003e\n\u003cp data-start=\"1637\" data-end=\"1822\"\u003eThe ECU is fully potted for durability and can be mounted in the engine bay or interior, while sealed automotive-grade connectors ensure long-term reliability in demanding environments.\u003c\/p\u003e\n\u003cp data-start=\"1637\" data-end=\"1822\"\u003e \u003c\/p\u003e\n\u003ch2 data-start=\"1829\" data-end=\"1859\"\u003e\u003cstrong data-start=\"1832\" data-end=\"1859\"\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"1861\" data-end=\"1893\"\u003e\u003cstrong data-start=\"1865\" data-end=\"1893\"\u003eEngine \u0026amp; Fuel Management\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1894\" data-end=\"2136\"\u003e\n\u003cli data-start=\"1894\" data-end=\"1940\"\u003e\n\u003cp data-start=\"1896\" data-end=\"1940\"\u003eIndividual cylinder fuel and spark control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1941\" data-end=\"1999\"\u003e\n\u003cp data-start=\"1943\" data-end=\"1999\"\u003eSelf-learning fuel strategy that improves as you drive\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2000\" data-end=\"2065\"\u003e\n\u003cp data-start=\"2002\" data-end=\"2065\"\u003eSupports naturally aspirated and boosted setups (1–7 bar MAP)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2066\" data-end=\"2084\"\u003e\n\u003cp data-start=\"2068\" data-end=\"2084\"\u003eE85 compatible\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2085\" data-end=\"2136\"\u003e\n\u003cp data-start=\"2087\" data-end=\"2136\"\u003eQuick-Start strategies for improved cold starts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2138\" data-end=\"2166\"\u003e\u003cstrong data-start=\"2142\" data-end=\"2166\"\u003eTransmission Control\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2167\" data-end=\"2320\"\u003e\n\u003cli data-start=\"2167\" data-end=\"2213\"\u003e\n\u003cp data-start=\"2169\" data-end=\"2213\"\u003eIntegrated electronic transmission control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2214\" data-end=\"2257\"\u003e\n\u003cp data-start=\"2216\" data-end=\"2257\"\u003eSupports GM 4L60E \u0026amp; 4L80E transmissions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2258\" data-end=\"2320\"\u003e\n\u003cp data-start=\"2260\" data-end=\"2320\"\u003eEliminates the need for a separate transmission controller\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2322\" data-end=\"2366\"\u003e\u003cstrong data-start=\"2326\" data-end=\"2366\"\u003eBoost, Nitrous \u0026amp; Power Adder Control\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2367\" data-end=\"2645\"\u003e\n\u003cli data-start=\"2367\" data-end=\"2432\"\u003e\n\u003cp data-start=\"2369\" data-end=\"2432\"\u003eFully integrated boost control (time, RPM, gear, speed-based)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2433\" data-end=\"2479\"\u003e\n\u003cp data-start=\"2435\" data-end=\"2479\"\u003e8-stage nitrous oxide control (wet or dry)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2480\" data-end=\"2526\"\u003e\n\u003cp data-start=\"2482\" data-end=\"2526\"\u003eProgressive control by time, RPM, or boost\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2527\" data-end=\"2602\"\u003e\n\u003cp data-start=\"2529\" data-end=\"2602\"\u003eIntegrated water\/methanol injection control with precision flow scaling\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2603\" data-end=\"2645\"\u003e\n\u003cp data-start=\"2605\" data-end=\"2645\"\u003eBoost Builder \u0026amp; anti-lag functionality\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2647\" data-end=\"2683\"\u003e\u003cstrong data-start=\"2651\" data-end=\"2683\"\u003eData Logging \u0026amp; Visualization\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2684\" data-end=\"2882\"\u003e\n\u003cli data-start=\"2684\" data-end=\"2721\"\u003e\n\u003cp data-start=\"2686\" data-end=\"2721\"\u003eBuilt-in 4GB internal data logger\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2722\" data-end=\"2772\"\u003e\n\u003cp data-start=\"2724\" data-end=\"2772\"\u003eReal-time strip chart and laptop gauge display\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2773\" data-end=\"2823\"\u003e\n\u003cp data-start=\"2775\" data-end=\"2823\"\u003eDual wideband O₂ sensor support (Bosch or NTK)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2824\" data-end=\"2882\"\u003e\n\u003cp data-start=\"2826\" data-end=\"2882\"\u003eLearn table smoothing and advanced data analysis tools\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2884\" data-end=\"2914\"\u003e\u003cstrong data-start=\"2888\" data-end=\"2914\"\u003eDrive-By-Wire \u0026amp; Safety\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2915\" data-end=\"3150\"\u003e\n\u003cli data-start=\"2915\" data-end=\"2988\"\u003e\n\u003cp data-start=\"2917\" data-end=\"2988\"\u003eIntegrated drive-by-wire throttle control (up to two throttle bodies)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2989\" data-end=\"3052\"\u003e\n\u003cp data-start=\"2991\" data-end=\"3052\"\u003eSupports GM, Ford, Chrysler, and Nissan DBW throttle bodies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3053\" data-end=\"3114\"\u003e\n\u003cp data-start=\"3055\" data-end=\"3114\"\u003eLean\/rich safety cutoffs and system protection strategies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3115\" data-end=\"3150\"\u003e\n\u003cp data-start=\"3117\" data-end=\"3150\"\u003eTwo-channel knock sensor inputs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 data-start=\"3157\" data-end=\"3176\"\u003e\u003cstrong data-start=\"3160\" data-end=\"3176\"\u003eKit Includes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"3177\" data-end=\"3363\"\u003e\n\u003cli data-start=\"3177\" data-end=\"3201\"\u003e\n\u003cp data-start=\"3179\" data-end=\"3201\"\u003eHolley Dominator ECU\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3202\" data-end=\"3223\"\u003e\n\u003cp data-start=\"3204\" data-end=\"3223\"\u003eECU Power Harness\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3224\" data-end=\"3251\"\u003e\n\u003cp data-start=\"3226\" data-end=\"3251\"\u003eLS1 Engine Main Harness\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3252\" data-end=\"3276\"\u003e\n\u003cp data-start=\"3254\" data-end=\"3276\"\u003eEV1 Injector Harness\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3277\" data-end=\"3309\"\u003e\n\u003cp data-start=\"3279\" data-end=\"3309\"\u003eBosch Wideband Oxygen Sensor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3310\" data-end=\"3337\"\u003e\n\u003cp data-start=\"3312\" data-end=\"3337\"\u003eUSB Communication Cable\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3338\" data-end=\"3363\"\u003e\n\u003cp data-start=\"3340\" data-end=\"3363\"\u003eECU Mounting Hardware\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 data-start=\"3370\" data-end=\"3401\"\u003e\u003cstrong data-start=\"3373\" data-end=\"3401\"\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"3402\" data-end=\"3910\"\u003e\n\u003cli data-start=\"3402\" data-end=\"3427\"\u003e\n\u003cp data-start=\"3404\" data-end=\"3427\"\u003e\u003cstrong data-start=\"3404\" data-end=\"3414\"\u003eBrand:\u003c\/strong\u003e Holley EFI\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3428\" data-end=\"3475\"\u003e\n\u003cp data-start=\"3430\" data-end=\"3475\"\u003e\u003cstrong data-start=\"3430\" data-end=\"3447\"\u003eProduct Type:\u003c\/strong\u003e Dominator ECU \/ ECM \/ VCM\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3476\" data-end=\"3536\"\u003e\n\u003cp data-start=\"3478\" data-end=\"3536\"\u003e\u003cstrong data-start=\"3478\" data-end=\"3496\"\u003eEmission Code:\u003c\/strong\u003e 3 (Race \/ Uncontrolled Vehicles Only)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3537\" data-end=\"3565\"\u003e\n\u003cp data-start=\"3539\" data-end=\"3565\"\u003e\u003cstrong data-start=\"3539\" data-end=\"3559\"\u003eCAN-BUS Support:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3566\" data-end=\"3592\"\u003e\n\u003cp data-start=\"3568\" data-end=\"3592\"\u003e\u003cstrong data-start=\"3568\" data-end=\"3586\"\u003eBoost Control:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3593\" data-end=\"3622\"\u003e\n\u003cp data-start=\"3595\" data-end=\"3622\"\u003e\u003cstrong data-start=\"3595\" data-end=\"3616\"\u003eTraction Control:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3623\" data-end=\"3647\"\u003e\n\u003cp data-start=\"3625\" data-end=\"3647\"\u003e\u003cstrong data-start=\"3625\" data-end=\"3641\"\u003eSelf-Tuning:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3648\" data-end=\"3694\"\u003e\n\u003cp data-start=\"3650\" data-end=\"3694\"\u003e\u003cstrong data-start=\"3650\" data-end=\"3666\"\u003eDatalogging:\u003c\/strong\u003e Yes (4GB internal memory)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3695\" data-end=\"3742\"\u003e\n\u003cp data-start=\"3697\" data-end=\"3742\"\u003e\u003cstrong data-start=\"3697\" data-end=\"3717\"\u003eNitrous Control:\u003c\/strong\u003e Wet \u0026amp; Dry, Multi-Stage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3743\" data-end=\"3796\"\u003e\n\u003cp data-start=\"3745\" data-end=\"3796\"\u003e\u003cstrong data-start=\"3745\" data-end=\"3766\"\u003eIgnition Control:\u003c\/strong\u003e Coil-per-cylinder supported\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3797\" data-end=\"3884\"\u003e\n\u003cp data-start=\"3799\" data-end=\"3816\"\u003e\u003cstrong data-start=\"3799\" data-end=\"3814\"\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"3819\" data-end=\"3884\"\u003e\n\u003cli data-start=\"3819\" data-end=\"3837\"\u003e\n\u003cp data-start=\"3821\" data-end=\"3837\"\u003eLength: 13.14\"\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3840\" data-end=\"3856\"\u003e\n\u003cp data-start=\"3842\" data-end=\"3856\"\u003eWidth: 6.10\"\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3859\" data-end=\"3884\"\u003e\n\u003cp data-start=\"3861\" data-end=\"3884\"\u003eHeight: 1.00\" – 1.84\"\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3885\" data-end=\"3910\"\u003e\n\u003cp data-start=\"3887\" data-end=\"3910\"\u003e\u003cstrong data-start=\"3887\" data-end=\"3895\"\u003eUPC:\u003c\/strong\u003e 090127137161\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 data-start=\"3917\" data-end=\"3953\"\u003e\u003cstrong data-start=\"3920\" data-end=\"3953\"\u003eEmissions \u0026amp; Legal Information\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"3954\" data-end=\"4065\"\u003eThis product is \u003cstrong data-start=\"3970\" data-end=\"4053\"\u003elegal for sale and use only on Uncontrolled (Non-Emissions Controlled) Vehicles\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul data-start=\"4066\" data-end=\"4221\"\u003e\n\u003cli data-start=\"4066\" data-end=\"4119\"\u003e\n\u003cp data-start=\"4068\" data-end=\"4119\"\u003e1965 and older U.S. California-certified vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4120\" data-end=\"4172\"\u003e\n\u003cp data-start=\"4122\" data-end=\"4172\"\u003e1967 and older U.S. federally certified vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4173\" data-end=\"4221\"\u003e\n\u003cp data-start=\"4175\" data-end=\"4221\"\u003e1967 and older foreign-manufactured vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4223\" data-end=\"4278\"\u003e\u003cstrong data-start=\"4223\" data-end=\"4278\"\u003eNot legal for use on emissions-controlled vehicles.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":54838682583208,"sku":"550-656","price":3349.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/550-656.jpg?v=1765574516"},{"product_id":"hly-520-1","title":"Holley Sniper EFI Installation Kit - 520-1","description":"Fuel Injection - Master Kit - Throttle Body Gasket - Hardware Included - Kit","brand":"Holley","offers":[{"title":"Default Title","offer_id":55633829724328,"sku":"HLY-520-1","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/HLY520-1.jpg?v=1781897081"},{"product_id":"hly-550-1001","title":"Holley Terminator X Stealth Kit 4150 Shiny Finish - 550-1001","description":"Fuel Injection - Terminator X Stealth - Throttle Body - Square Bore - Aluminum - Silver - GM LS-Series - Kit","brand":"Holley","offers":[{"title":"Default Title","offer_id":55633836212392,"sku":"HLY-550-1001","price":1783.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/HLY550-1001.jpg?v=1781898685"},{"product_id":"hly-550-1002","title":"Holley Terminator X Stealth EFI Kit 4150  Black - 550-1002","description":"Fuel Injection - Terminator X Stealth - Throttle Body - Square Bore - Aluminum - Black 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