{"product_id":"bmw-b58-stage-2-remap-470-500bhp-m140i-m240i-340i-440i","title":"BMW B58 Stage 2+ Remap — 470–500bhp (M140i \/ M240i \/ 340i \/ 440i)","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWP Stage 2+ — 470–500bhp \/ 515–530ft\/lb\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eStage 2+ pushes the stock B58 turbo to its absolute ceiling. With a performance downpipe, uprated high-pressure fuel pump and panel filter, we extract 470–500bhp and 515–530ft\/lb — the maximum the factory turbocharger can safely deliver.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe HPFP upgrade is the key unlock at this stage. Beyond Stage 2 power levels, the factory fuel pump can't deliver enough fuel to keep the engine safe under full load. A higher-flowing pump (typically the B58TU\/Supra unit) solves this completely, allowing us to run the boost and timing the turbo is truly capable of.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWhat's included:\u003c\/strong\u003e Custom dyno calibration with before \u0026amp; after printout \u003cstrong\u003eHardware required:\u003c\/strong\u003e 4\" performance downpipe · Uprated HPFP · High-flow panel filter \u003cstrong\u003eRecommended:\u003c\/strong\u003e Upgraded chargepipe · ZF gearbox calibration (add-on) · NGK 94201 spark plugs\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e📖 \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/wayside-performance.co.uk\/pages\/bmw-b58-tuning-guide-m140i-m240i-340i-440i-more-wayside-performance\" target=\"_blank\" rel=\"noopener\"\u003eRead our full BMW B58 Tuning Guide →\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cem\u003e99 RON fuel required for optimal results.\u003c\/em\u003e ⚠️ Decat downpipes may affect emissions compliance and MOT testing. Sports cat options available for road use.\u003c\/p\u003e","brand":"Wayside Performance","offers":[{"title":"ECU Only","offer_id":51075043197234,"sku":"WP-B58-MAP3","price":599.0,"currency_code":"GBP","in_stock":true},{"title":"ECU \u0026 TCU","offer_id":51075043230002,"sku":"WP-B58-MAP4","price":849.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1509\/8328\/products\/WPStage2_9425a959-d092-424c-9f46-132e6be6c8cb.jpg?v=1642178702","url":"https:\/\/wayside-performance.co.uk\/products\/bmw-b58-stage-2-remap-470-500bhp-m140i-m240i-340i-440i","provider":"Wayside Performance ","version":"1.0","type":"link"}