{"product_id":"haltech-nexus-s3-honda-prelude-1988-1991-plug-n-play-adapter-harness-kit-ht-651428","title":"Haltech Nexus S3 ECU \u0026 Honda Prelude 1988-1991 Plug 'n' Play Adapter Harness Kit (HT-651428)","description":"\u003cp\u003e\u003cstrong\u003eThe fourth-gen Prelude B20A is a respected naturally aspirated Honda platform with a loyal following in the tuning community.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Honda Prelude B20A has more in it than the factory ECU allows, and proper standalone calibration is how you find 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\u003eThrottle response that's immediate and direct, not filtered through Honda's conservative factory mapping\u003c\/li\u003e\n\u003cli\u003eVTEC engagement calibrated to your actual RPM targets, not factory compromise points\u003c\/li\u003e\n\u003cli\u003eFuel and ignition timing built around your modifications\u003c\/li\u003e\n\u003cli\u003eIdle stability that's consistent and locked in at all temperatures\u003c\/li\u003e\n\u003cli\u003eA tune that reflects your build rather than working around it\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePlug-and-play fitment for 1988-1991 Honda Prelude B20A, 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 1988-1991 Honda Prelude B20A\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\u003e1988-1991 Honda Prelude, Manual Transmission.\u003c\/p\u003e","brand":"Tuned By Shawn","offers":[{"title":"Default Title","offer_id":43447304650819,"sku":"HT-651428","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-honda-prelude-1988-1991-plug-n-play-adapter-harness-kit-ht-651428","provider":"Tuned by Shawn","version":"1.0","type":"link"}