{"product_id":"toyota-celica-3s-gte-toyota-mr2-3s-gte-1989-1993-haltech-nexus-wiring-harness-bf29063","title":"Toyota Celica 3S-GTE | Toyota MR2 3S-GTE 1989-1993 Haltech Nexus Wiring Harness (BF29063)","description":"\u003cp\u003e\u003cstrong\u003eThe 3S-GTE is a proper rally engine, and it deserves a proper ECU to match.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Toyota Celica 3S-GTE ran the 3S-GTE in one of its most capable AWD configurations, but the factory ECU was never going to let it reach its ceiling. The \u003cstrong\u003eBoomslang PNP Wiring Harness for the Haltech Nexus\u003c\/strong\u003e connects directly to your factory harness without any permanent modifications, giving the Haltech Nexus full standalone engine control. No cutting, no splicing, fully reversible.\u003c\/p\u003e\n\u003ch4\u003eAdvantages\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePower delivery that's linear and predictable through the entire boost curve\u003c\/li\u003e\n\u003cli\u003eThrottle response tuned to your exact injectors and fuel pressure, not Toyota's conservative baseline\u003c\/li\u003e\n\u003cli\u003eBoost that builds aggressively where you want it without factory ECU intervention\u003c\/li\u003e\n\u003cli\u003eConsistent behavior at temperature, not the hunting the OEM map produces\u003c\/li\u003e\n\u003cli\u003eA car that actually responds the way the 3S-GTE was always capable of\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePlug-and-play fitment for 1989-1993 Toyota Celica 3S-GTE, manual transmission\u003c\/li\u003e\n\u003cli\u003eCompatible with Haltech Nexus R3, R5, S2, and S3 ECUs\u003c\/li\u003e\n\u003cli\u003eNo cutting or splicing of factory wiring\u003c\/li\u003e\n\u003cli\u003eOEM-quality connectors, USA-built byBoomslang Fabrication\u003c\/li\u003e\n\u003cli\u003eFully reversible, factory harness preserved\u003c\/li\u003e\n\u003cli\u003eFor competition and off-road use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eThe Details\u003c\/h4\u003e\n\u003cp\u003eBuilt specifically for this vehicle's connector layout with OEM-spec connectors and correct wire gauge throughout. Your factory harness stays completely untouched and the car can return to stock at any time. The Haltech Nexus takes full engine control once installed, giving your tuner a clean vehicle-specific foundation to build a proper map from.\u003c\/p\u003e\n\u003ch4\u003eKit Includes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1xBoomslang PNP wiring harness for 1989-1993 Toyota Celica 3S-GTE\u003c\/li\u003e\n\u003cli\u003eHaltech Nexus ECU sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment\u003c\/h4\u003e\n\u003cp\u003e1989-1993 Toyota Celica 3S-GTE \/ 1989-1993 Toyota MR2 3S-GTE, Manual Transmission.\u003c\/p\u003e","brand":"Boomslang","offers":[{"title":"S3","offer_id":43437471301699,"sku":"BF29063-S3","price":840.0,"currency_code":"USD","in_stock":true},{"title":"S2","offer_id":43437471334467,"sku":"BF29063-S2","price":840.0,"currency_code":"USD","in_stock":true},{"title":"R3","offer_id":43437471367235,"sku":"BF29063-R3","price":840.0,"currency_code":"USD","in_stock":true},{"title":"R5","offer_id":43437471400003,"sku":"BF29063-R5","price":980.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/Boomslang-nexus-wiring-harness-2.png?v=1780677538","url":"https:\/\/www.tunedbyshawn.com\/products\/toyota-celica-3s-gte-toyota-mr2-3s-gte-1989-1993-haltech-nexus-wiring-harness-bf29063","provider":"Tuned by Shawn","version":"1.0","type":"link"}