{"product_id":"dorch-engineering-n55-ds15-stage-1-5-hpfp-upgrade","title":"Dorch Engineering N55 DS15 Stage 1.5 HPFP Upgrade","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eDorch Engineering's widely successful \"Dorch Stage 1\" (DS1) pump has now been replaced by their latest creation, the DS15, a completely redesigned and optimised-from-the-ground-up \"Stage 1.5\" solution. Externally, the pump packaging has been updated for improved hose routing and easier installation. Internally, the pressure chamber, spring rates, and plunger depth have all been reworked, with the pump's volumetric efficiency fully optimised.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThis is now a genuinely 250-bar capable pump, with real gains already achievable at 200 bar. It's a complete plug-and-play kit to support \u003cstrong\u003eup to 550whp on E10 fuel\u003c\/strong\u003e (this figure varies depending on tuning strategy and ethanol blend). Just like the previous DS1, there's no cutting, no bending, no crimping, this kit drops right in with full control from the DME, exactly like the OEM pump, with all the safety and sophistication of the stock system remaining intact. Everything needed for installation is included, right down to a 250-bar-capacity hardline connecting the HPFP to your fuel rail.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eSoftware changes are required to run this pump.\u003c\/strong\u003e If using MHD or Bootmod3, simply select the pump upgrade option when flashing. Otherwise, send your .BIN file to Dorch Engineering directly for the appropriate software changes via WinOLS.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eGenuinely useful to know:\u003c\/strong\u003e unlike the higher-tier DS25, the DS15 has no minimum power requirement, making it the sensible default choice if you're planning to pair it with Dorch Engineering's N55 Lift Kit (sold separately) without chasing extreme power targets.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"mt-2 -mb-1 text-base font-bold\"\u003eWhy Choose This HPFP Upgrade\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCompletely redesigned, ground-up successor to the popular DS1 pump\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eUp to 550whp on E10 fuel\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e250-bar capable pump, genuine gains already at 200 bar\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNo minimum power requirement, unlike the higher-tier DS25\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100% plug-and-play OEM fitment, no cutting, bending, or crimping required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFull DME control retained, all OEM safety and sophistication intact\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eGenuine lifetime warranty\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDedicated in-house calibration engineer and 24\/7 customer\/tuning support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"mt-2 -mb-1 text-base font-bold\"\u003eCompatibility\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW E82\/E88 135i\/1M (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW E90\/E92\/E93 335i (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW E84 X1 35i (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW E70\/E71 X5\/X6 35i (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F20\/F21 M135i\/135i (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F22\/F23 M235i\/235i (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F30\/F31\/F34 335i\/335xi (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F32\/F33\/F36 435i\/435xi (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F10\/F11 535i\/535xi (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F25\/F26 X3\/X4 35i (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F15\/F16 X5\/X6 35i (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F87 M2 (N55)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e only 2013+ models with the OE Bosch HPFP kit are compatible. Not compatible with 2011-2012 N55 vehicles.\u003c\/p\u003e","brand":"Dorch Engineering","offers":[{"title":"Old Style (-12\/2013)","offer_id":54462612373837,"sku":"DEN-FUP-N55-001","price":1396.28,"currency_code":"EUR","in_stock":false},{"title":"New Style (12\/2013+)","offer_id":54462612406605,"sku":"DEN-FUP-N55-001","price":1396.28,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/4808\/2253\/files\/dorch-engineering-n55-ds15-stage-1-5-hpfp-upgrade.webp?v=1785945552","url":"https:\/\/i6tuning.com\/products\/dorch-engineering-n55-ds15-stage-1-5-hpfp-upgrade","provider":"i6 Tuning","version":"1.0","type":"link"}