{"product_id":"fueltech-ls550-v8-complete-harness","title":"FuelTech FT550 LS Engine GEN IV Complete Harness","description":"\u003cp\u003eThe FT550 LS Engine Gen IV Complete Harness replaces the factory GM ECU and harness on an LS so the engine runs standalone on a FuelTech FT550 or FT550LITE. It is pre-terminated for the LS with all relays and fuses, a firewall grommet and a labeled connector at every sensor, so power-up is a three-wire battery and ignition hookup. Both 58x and 24x triggers, LS3-style coils, flex fuel and dual wideband are supported out of the box.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e8 sequential EV1 injector outputs; no injector sub-harness needed\u003c\/li\u003e\n\u003cli\u003eHigh impedance injectors direct, or low impedance with 2 FuelTech Peak \u0026amp; Hold drivers\u003c\/li\u003e\n\u003cli\u003eDirect connection to LS3-style coils, fully sequential; no coil sub-harness\u003c\/li\u003e\n\u003cli\u003e58x or 24x crank; front or rear cam sync (1 and 4 tooth)\u003c\/li\u003e\n\u003cli\u003eDrive-by-wire (GM pedal and ETB) or cable throttle body\u003c\/li\u003e\n\u003cli\u003eContinental flex fuel sensor connector included\u003c\/li\u003e\n\u003cli\u003eDual FuelTech WB-O2 Nano with Bosch LSU 4.2 sensors\u003c\/li\u003e\n\u003cli\u003eINPUTS connector for up to 6 extra inputs; EXTRA OUTPUTS connector for up to 8 outputs\u003c\/li\u003e\n\u003cli\u003eThree 40A relays with fuses: main, injectors\/drivers, coils\u003c\/li\u003e\n\u003cli\u003eHarness weight: 8 lb 3 oz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eFuelTech FT550 or FT550LITE on a GM Gen IV LS engine. Throttle support covers the OEM GM pedal and electronic throttle body from the LS2, LS3, LS7, LSA, LS9 and similar, as well as a cable throttle body when converted from electronic to mechanical throttle.\u003c\/p\u003e\n\u003ch3\u003ePre-wired sensors\u003c\/h3\u003e\n\u003cp\u003eElectronic pedal, electronic throttle body, TPS, 24x or 58x crank trigger, front and rear cam sync, flex fuel, fuel pressure, oil pressure, coolant and intake air temperature. More can be added through the INPUTS connector.\u003c\/p\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 FT550 LS Engine Gen IV Complete Harness\u003c\/li\u003e\n\u003cli\u003e2 Peak \u0026amp; Hold jumper harnesses\u003c\/li\u003e\n\u003cli\u003e1 LS550 6-way connector kit\u003c\/li\u003e\n\u003cli\u003e1 LS550 8-way connector kit\u003c\/li\u003e\n\u003cli\u003e1 LS550 10-way connector kit\u003c\/li\u003e\n\u003cli\u003e1 operation and installation guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/files.fueltech.net\/manual\/Ingles\/LS550%20Manual.pdf\" target=\"_blank\" rel=\"noopener\"\u003eFuelTech LS550 V8 complete harness manual (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Which ECUs does the LS550 harness fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The FuelTech FT550 and FT550LITE.\"}},{\"@type\":\"Question\",\"name\":\"Does it work with 24x and 58x LS engines?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. It is ready for both 58x and 24x crank triggers, with front or rear cam sync (1 and 4 tooth compatible).\"}},{\"@type\":\"Question\",\"name\":\"Do I need separate injector or coil sub-harnesses?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Injectors and LS3-style coils are wired directly in the harness.\"}},{\"@type\":\"Question\",\"name\":\"Does it support drive-by-wire?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. It supports the OEM GM pedal and electronic throttle body from the LS2, LS3, LS7, LSA, LS9 and similar, or a cable throttle body when converted to mechanical throttle.\"}},{\"@type\":\"Question\",\"name\":\"Can I run low impedance injectors?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, with two FuelTech Peak and Hold drivers. High impedance injectors run directly, using the two included Peak and Hold jumper harnesses.\"}},{\"@type\":\"Question\",\"name\":\"Is it flex fuel ready?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. It includes a connector for the Continental flex fuel sensor.\"}},{\"@type\":\"Question\",\"name\":\"What is included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The harness, two Peak and Hold jumper harnesses, LS550 6-way, 8-way and 10-way connector kits and an operation and installation guide.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"Default Title","offer_id":50629709725913,"sku":"2002007265","price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2734\/8185\/files\/FuelTech-LS-550-V8-Complete-Wiring-Harness-LS-Engine-Swap.png?v=1791474242","url":"https:\/\/www.autosportsengineering.com\/products\/fueltech-ls550-v8-complete-harness","provider":"Autosports engineering","version":"1.0","type":"link"}