{"product_id":"toyota-corolla-2zz-ge-toyota-matrix-2zz-ge-2003-2004-haltech-nexus-wiring-harness-bf29159","title":"Toyota Corolla 2ZZ-GE | Toyota Matrix 2ZZ-GE 2003-2004 Haltech Nexus Wiring Harness (BF29159)","description":"\u003cp\u003e\u003cstrong\u003eThe 2ZZ-GE is one of the most underrated naturally aspirated engines Toyota made, and standalone ECU support unlocks what makes it special.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Toyota Corolla 2ZZ-GE platform responds well to proper standalone calibration, and the factory ECU is the main thing standing in the way. 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\u003eThrottle response that's immediate and proportional, not filtered through conservative factory logic\u003c\/li\u003e\n\u003cli\u003eFuel and timing calibrated precisely to your setup\u003c\/li\u003e\n\u003cli\u003eIdle stability that's consistent regardless of temperature\u003c\/li\u003e\n\u003cli\u003eEngine behavior that accurately reflects your modifications\u003c\/li\u003e\n\u003cli\u003eA proper tuning foundation for a platform that deserves it\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePlug-and-play fitment for 2003-2004 Toyota Corolla 2ZZ-GE, 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 2003-2004 Toyota Corolla 2ZZ-GE\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\u003e2003-2004 Toyota Corolla 2ZZ-GE \/ 2003-2004 Toyota Matrix 2ZZ-GE, Manual Transmission.\u003c\/p\u003e","brand":"Boomslang","offers":[{"title":"S3","offer_id":43437467074627,"sku":"BF29159-S3","price":960.0,"currency_code":"USD","in_stock":true},{"title":"S2","offer_id":43437467107395,"sku":"BF29159-S2","price":960.0,"currency_code":"USD","in_stock":true},{"title":"R3","offer_id":43437467140163,"sku":"BF29159-R3","price":960.0,"currency_code":"USD","in_stock":true},{"title":"R5","offer_id":43437467172931,"sku":"BF29159-R5","price":1120.0,"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-corolla-2zz-ge-toyota-matrix-2zz-ge-2003-2004-haltech-nexus-wiring-harness-bf29159","provider":"Tuned by Shawn","version":"1.0","type":"link"}