{"product_id":"precision-raceworks-bmw-n54-n55-series-boost-reference-harness-inc-1m-m235i-335i-m3-m4","title":"Precision Raceworks Boost Referenced Pump Activation Harness for BMW N54\/N55 (Plug \u0026 Play, 13 PSI Hobbs Switch, Aux Fuel Pump) – Fits 135i 335i 435i M235i M2 M3 M4 1M – Part 201-0049","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \u003ch2\u003eBMW N54 N55 Pressure‑Activated Fuel Pump Wiring Loom by Precision Raceworks\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003ePart number: 201-0049\u003c\/strong\u003e\u003c\/p\u003e\n\n  \u003cp\u003eKeep your tuned BMW fueling strong under boost with this Precision Raceworks pressure‑switch controlled fuel pump loom. It is a direct‑fit solution for triggering a secondary low pressure pump exactly when the engine sees positive manifold pressure. No cutting, no crimping, no headaches. Just dependable fuel delivery for road, track and fast‑road builds.\u003c\/p\u003e\n\n  \u003cp\u003eBuilt with proper automotive hardware and OEM‑style connectors, this harness is the go‑to choice for tuners who want clean install quality and rock solid activation at the same boost threshold every time. We run this kit on our own cars and our customers love the consistent results and tidy factory look.\u003c\/p\u003e\n\n  \u003ch3\u003eWhy enthusiasts choose this loom\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDirect‑fit connectors for a factory‑finish install. No splicing required\u003c\/li\u003e\n    \u003cli\u003e10 gauge oxygen‑free copper cable for maximum current capacity to your additional in‑tank pump\u003c\/li\u003e\n    \u003cli\u003ePre‑set 13 psi boost pressure switch for precise and repeatable triggering\u003c\/li\u003e\n    \u003cli\u003eAutomotive‑grade switch is safe in oil and air, proven to live in engine bay temperatures\u003c\/li\u003e\n    \u003cli\u003ePre‑installed 30 amp fuse for built‑in circuit protection\u003c\/li\u003e\n    \u003cli\u003eTrusted by tuners and pump suppliers worldwide for N54 and N55 fuel system control\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat it does\u003c\/h3\u003e\n  \u003cp\u003eUnder load, the pressure switch senses manifold boost and closes the circuit to power your secondary low pressure fuel pump. That keeps fuel pressure stable when it matters, supporting higher power levels, hybrid turbo upgrades and spirited use. The install is fully reversible and integrates neatly with the factory harness.\u003c\/p\u003e\n\n  \u003ch3\u003eKey details\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eActivation method: boost pressure switch\u003c\/li\u003e\n    \u003cli\u003eSet point: 13 psi\u003c\/li\u003e\n    \u003cli\u003eWiring: 10 gauge oxygen‑free copper\u003c\/li\u003e\n    \u003cli\u003eConnector style: OEM‑type quick connect\u003c\/li\u003e\n    \u003cli\u003eFuse: 30 amp pre‑fitted\u003c\/li\u003e\n    \u003cli\u003eApproximate weight: 2.1 lbs\u003c\/li\u003e\n    \u003cli\u003eManufacturer: Precision Raceworks\u003c\/li\u003e\n    \u003cli\u003ePart number: 201-0049\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cp\u003eDesigned for turbocharged BMW platforms using the N54 or N55 engine. Common applications include:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 Series E8x 128i, 135i, 135is. 1M Coupe E82\u003c\/li\u003e\n    \u003cli\u003e2 Series F2x 228i, M235i. M2 F87 including M2 Competition\u003c\/li\u003e\n    \u003cli\u003e3 Series E9x 323i, 325i, 328i, 330i, 335i, 335is, xDrive variants\u003c\/li\u003e\n    \u003cli\u003e3 Series F3x 320i, 328i, 335i, xDrive variants\u003c\/li\u003e\n    \u003cli\u003e4 Series F3x 428i, 435i\u003c\/li\u003e\n    \u003cli\u003eM3 E9x and F80. M4 F8x\u003c\/li\u003e\n    \u003cli\u003eX1 E84\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eReal‑world reliability\u003c\/h3\u003e\n  \u003cp\u003eUnlike generic pool or spa switches, the included automotive pressure switch is designed for engine environments and can handle exposure to oil and heat. This equals years of service on hard‑driven, boost‑raised BMWs. Feedback from our workshop and customers is consistently positive. Fitment is straightforward and the performance is repeatable.\u003c\/p\u003e\n\n  \u003ch3\u003eFitting and support\u003c\/h3\u003e\n  \u003cp\u003eDIY‑friendly with direct‑fit connectors. If you prefer professional fitting, book with MJ Modifications in Warwickshire. Email \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e for a quote.\u003c\/p\u003e\n\n  \u003ch3\u003eCompatibility check\u003c\/h3\u003e\n  \u003cp\u003eWe verify fitment before dispatch. Add your UK registration or the last 7 of your VIN at checkout so we can confirm suitability for your vehicle.\u003c\/p\u003e\n\n  \u003ch3\u003eSearch keywords to help you find this part\u003c\/h3\u003e\n  \u003cp\u003eBMW turbo fuel pump relay kit, N54 secondary pump wiring, N55 LPFP controller, boost‑triggered pump switch 13 psi, BMW fuel pump loom, N54 fuel system upgrade wiring, N55 auxiliary pump trigger, BMW performance fuel wiring harness, E series F series fuel pump control, 135i 335i 435i M235i M2 M3 M4 fuel pump kit, Precision Raceworks 201-0049.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Precision Raceworks","offers":[{"title":"Default Title","offer_id":56008707539330,"sku":null,"price":82.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/PrecisionRaceworksBMWN54N55SeriesBoostReferenceHarness_Inc.1M_M235i_335i_M3_M4_-1_1946x_4ef6e0fe-5c59-454c-b442-3e207eb9a437.jpg?v=1764091097","url":"https:\/\/mjmodifications.co.uk\/products\/precision-raceworks-bmw-n54-n55-series-boost-reference-harness-inc-1m-m235i-335i-m3-m4","provider":"MJ Modifications","version":"1.0","type":"link"}