{"product_id":"haltech-nexus-s3-subaru-wrx-2011-2014-plug-n-play-adapter-harness-kit-ht-651121","title":"Haltech Nexus S3 ECU \u0026 Subaru WRX 2011-2014 Plug 'n' Play Adapter Harness Kit (HT-651121)","description":"\u003cp\u003e\u003cstrong\u003eThe VA WRX EJ257 has been one of the most-tuned Subaru engines of the last decade, and proper standalone calibration shows why the platform earned that reputation.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Subaru WRX EJ257 runs a boxer engine with genuine tuning potential, and the factory ECU is the limiting factor in reaching it. The \u003cstrong\u003eTuned By Shawn PNP Wiring Harness Kit 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\u003eBoost delivery that's precise and repeatable instead of factory ECU conservative\u003c\/li\u003e\n\u003cli\u003eThrottle response that's direct and proportional to your inputs\u003c\/li\u003e\n\u003cli\u003eFlat-four character that comes through clearly when the tune is built for the actual engine\u003c\/li\u003e\n\u003cli\u003eFueling that stays accurate at temperature, not chasing a moving target\u003c\/li\u003e\n\u003cli\u003eA tune that reflects your modifications instead of compensating for them\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePlug-and-play fitment for 2011-2014 Subaru WRX EJ257, 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 by Boomslang 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\u003e1x Boomslang PNP wiring harness for 2011-2014 Subaru WRX EJ257\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\u003e2011-2014 Subaru WRX, Manual Transmission.\u003c\/p\u003e","brand":"Tuned By Shawn","offers":[{"title":"Default Title","offer_id":43447247437891,"sku":"HT-651121","price":2987.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/HT-213301_00BFv2.png?v=1782007150","url":"https:\/\/www.tunedbyshawn.com\/products\/haltech-nexus-s3-subaru-wrx-2011-2014-plug-n-play-adapter-harness-kit-ht-651121","provider":"Tuned by Shawn","version":"1.0","type":"link"}