{"product_id":"boomslang-holley-hp-bf34998hp","title":"Boomslang Holley HP (BF34998-HP)","description":"\u003ch2\u003eHolley HP -“ Holley Plug-and-Play Parallel Harness Integration\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHolley HP\u003c\/strong\u003e is a popular choice for GM-based performance builds, and Boomslang supports Holley installations with \u003cstrong\u003eplug-and-play (PNP) parallel harnesses\u003c\/strong\u003e engineered to retain the factory GM ECU in the vehicle while allowing Holley to control critical engine functions. This setup is ideal for \u003cstrong\u003eengine swaps, turbo builds, supercharged combinations, and competition vehicles\u003c\/strong\u003e that need Holley control while keeping OEM vehicle network functions intact.\u003c\/p\u003e\n\u003cp\u003eBoomslang Holley harnesses are designed as \u003cstrong\u003eparallel harnesses\u003c\/strong\u003e that keep the GM ECU connected so the \u003cstrong\u003eGM LAN and Body Control Module\u003c\/strong\u003e continue operating. The Holley ECU is wired to control \u003cstrong\u003einjectors, coils, fuel pump, fans, and boost control\u003c\/strong\u003e, while \u003cstrong\u003edrive-by-wire throttle control remains with the GM ECU\u003c\/strong\u003e to maintain BCM functionality. Climate control, dash gauges, and automatic transmission control also remain with the GM ECU.\u003c\/p\u003e\n\u003ch3\u003eImportant Integration Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eThe \u003cstrong\u003eHolley Main Power Harness (558-308)\u003c\/strong\u003e must be used with this Boomslang harness.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHolley LSU4\/NTK wideband sub-harness\u003c\/strong\u003e included depending on ECU type.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully plug-and-play\u003c\/strong\u003e, easy to install\/uninstall, preserves factory wiring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSaves time and hard-wiring costs\u003c\/strong\u003e while improving serviceability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSEO Keywords:\u003c\/strong\u003e Holley HP, Holley plug and play harness, GM parallel ECU harness, Terminator X harness, Dominator harness, Holley HP harness, Bosch 4.9 LSU wideband, race wiring.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eImportant Legal Notice -“ Read Before Installing\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBOOMSLANG FABRICATION LLC PRODUCTS HAVE LEGAL RESTRICTIONS. READ THIS BEFORE INSTALLING\/USING!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBOOMSLANG FABRICATION LLC PRODUCTS MAY BE USED SOLELY ON VEHICLES USED IN SANCTIONED COMPETITION\u003c\/strong\u003e which may never be used upon a public road or highway, unless permitted by specific regulatory exemption.\u003c\/p\u003e\n\u003cp\u003eIt is the responsibility of the installer and\/or user of this product(s) to ensure that it is used in compliance with all applicable laws and regulations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis policy only applies to installers and\/or users who are located in the United States.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Boomslang","offers":[{"title":"Default Title","offer_id":42492977053783,"sku":"BF34998-HP","price":1467.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/8642\/1591\/files\/img3559_384_1ef8487e-c167-4ad6-b1da-26fcb9f7ce36.png?v=1769097556","url":"https:\/\/jmautosports.com\/products\/boomslang-holley-hp-bf34998hp","provider":"JM Auto Racing","version":"1.0","type":"link"}