{"product_id":"cp4-hpfp-metering-valve-upgrade","title":"CP4 HPFP Metering Valve Upgrade","description":"\u003ch3 data-start=\"237\" data-end=\"326\"\u003e\u003cstrong data-start=\"239\" data-end=\"324\"\u003eCP4 HPFP – Metering Valve Upgrade.\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"327\" data-end=\"450\"\u003e \u003cstrong data-start=\"327\" data-end=\"450\"\u003eFor tuning, track and off-road use only. Not for road use if it modifies emissions or safety systems.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"452\" data-end=\"725\"\u003e A performance upgrade for all \u003cstrong data-start=\"514\" data-end=\"533\"\u003eCP4.1 and CP4.2\u003c\/strong\u003e High Pressure Fuel Pumps (HPFP). The valve significantly increases the pump's flow capacity and allows for greater fuel delivery to the engine during boost conditions.\u003c\/p\u003e\n\u003ch3 data-start=\"732\" data-end=\"785\"\u003e \u003cstrong data-start=\"735\" data-end=\"785\"\u003eMore efficient flow and improved performance\u003c\/strong\u003e \u003c\/h3\u003e\n\u003cul data-start=\"787\" data-end=\"1087\"\u003e\n\n\u003cli data-start=\"787\" data-end=\"856\"\u003e\n\n\u003cp data-start=\"789\" data-end=\"856\"\u003e \u003cstrong data-start=\"789\" data-end=\"808\"\u003eFor CP4.1 pumps,\u003c\/strong\u003e the upgrade produces approximately \u003cstrong data-start=\"831\" data-end=\"839\"\u003e22%\u003c\/strong\u003e additional flow. \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"857\" data-end=\"1087\"\u003e\n\n\u003cp data-start=\"859\" data-end=\"957\"\u003e \u003cstrong data-start=\"859\" data-end=\"896\"\u003eThe CP4.2 pump on the 3.0 TDI engine\u003c\/strong\u003e improves flow by up to \u003cstrong data-start=\"918\" data-end=\"927\"\u003e110%\u003c\/strong\u003e , which according to our tests resulted in: \u003c\/p\u003e\n\n\u003cul data-start=\"960\" data-end=\"1087\"\u003e\n\n\u003cli data-start=\"960\" data-end=\"990\"\u003e\n\n\u003cp data-start=\"962\" data-end=\"990\"\u003e about \u003cstrong data-start=\"967\" data-end=\"980\"\u003e+50 lb-ft\u003c\/strong\u003e of torque \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"993\" data-end=\"1022\"\u003e\n\n\u003cp data-start=\"995\" data-end=\"1022\"\u003e about \u003cstrong data-start=\"1000\" data-end=\"1010\"\u003e+10 hp\u003c\/strong\u003e additional power \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1025\" data-end=\"1087\"\u003e\n\n\u003cp data-start=\"1027\" data-end=\"1087\"\u003e significantly better rail pressure maintenance at full throttle \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"1089\" data-end=\"1246\"\u003e Before the update, our 3.0 TDI test car suffered from a drop in fuel pressure at full throttle and intermittent limp mode — after the update, the problem went away.\u003c\/p\u003e\n\u003cp data-start=\"1248\" data-end=\"1426\"\u003e \u003cstrong data-start=\"1248\" data-end=\"1273\"\u003eFor 2.0 TDI engines,\u003c\/strong\u003e the increases are smaller (around +5 lb-ft and +6 hp), but with further programming the increase can be significantly greater, especially at low revs.\u003c\/p\u003e\n\u003ch3 data-start=\"1433\" data-end=\"1451\"\u003e \u003cstrong data-start=\"1436\" data-end=\"1451\"\u003eAptitude\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"1452\" data-end=\"1515\"\u003e Suitable for both \u003cstrong data-start=\"1463\" data-end=\"1471\"\u003eVAG\u003c\/strong\u003e and \u003cstrong data-start=\"1477\" data-end=\"1497\"\u003eBMW vehicles\u003c\/strong\u003e using: \u003c\/p\u003e\n\u003cul data-start=\"1517\" data-end=\"1554\"\u003e\n\n\u003cli data-start=\"1517\" data-end=\"1535\"\u003e\n\n\u003cp data-start=\"1519\" data-end=\"1535\"\u003e \u003cstrong data-start=\"1519\" data-end=\"1533\"\u003eCP4.1 HPFP\u003c\/strong\u003e \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1536\" data-end=\"1554\"\u003e\n\n\u003cp data-start=\"1538\" data-end=\"1554\"\u003e \u003cstrong data-start=\"1538\" data-end=\"1552\"\u003eCP4.2 HPFP\u003c\/strong\u003e\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"1556\" data-end=\"1641\"\u003e This makes the valve a versatile upgrade for a wide range of diesel engines.\u003c\/p\u003e\n\u003ch3 data-start=\"1648\" data-end=\"1678\"\u003e \u003cstrong data-start=\"1651\" data-end=\"1678\"\u003eConnector type options\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"1679\" data-end=\"1715\"\u003e There are two different connector types available: \u003c\/p\u003e\n\u003cul data-start=\"1717\" data-end=\"1748\"\u003e\n\n\u003cli data-start=\"1717\" data-end=\"1731\"\u003e\n\n\u003cp data-start=\"1719\" data-end=\"1731\"\u003e Straight plug \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1732\" data-end=\"1748\"\u003e\n\n\u003cp data-start=\"1734\" data-end=\"1748\"\u003e 90° angle plug\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"1750\" data-end=\"1833\"\u003e Please check the connector type of your vehicle's fuel pump valve before ordering.\u003c\/p\u003e\n\u003cp data-start=\"1835\" data-end=\"1929\"\u003e \u003cstrong data-start=\"1835\" data-end=\"1844\"\u003eNote:\u003c\/strong\u003e\u003cbr data-start=\"1844\" data-end=\"1847\"\u003e If your car has \u003cstrong data-start=\"1864\" data-end=\"1892\"\u003ea 90° “D-shaped” connector\u003c\/strong\u003e , you will need \u003cstrong data-start=\"1904\" data-end=\"1928\"\u003ea wiring harness adapter\u003c\/strong\u003e .\u003c\/p\u003e\n\u003ch3 data-start=\"1936\" data-end=\"1966\"\u003e \u003cstrong data-start=\"1939\" data-end=\"1966\"\u003eInstallation and considerations\u003c\/strong\u003e \u003c\/h3\u003e\n\u003cul data-start=\"1967\" data-end=\"2180\"\u003e\n\n\u003cli data-start=\"1967\" data-end=\"2004\"\u003e\n\n\u003cp data-start=\"1969\" data-end=\"2004\"\u003e Completely \u003cstrong data-start=\"1976\" data-end=\"1993\"\u003eplug-and-play\u003c\/strong\u003e installation \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2005\" data-end=\"2082\"\u003e\n\n\u003cp data-start=\"2007\" data-end=\"2082\"\u003e Not necessary unless the vehicle is tuned or fuel consumption has increased \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2083\" data-end=\"2180\"\u003e\n\n\u003cp data-start=\"2085\" data-end=\"2180\"\u003e Recommended for vehicles that have problems maintaining rail pressure after increasing power\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"QT Parts","offers":[{"title":"I don't need ","offer_id":51865352700251,"sku":"SD5549.1","price":253.0,"currency_code":"GBP","in_stock":true},{"title":"Add to order","offer_id":51865352733019,"sku":"SD5549.1+DSD6604","price":296.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9937\/5126\/files\/Nayttokuva2025-12-03kello22.51.27.png?v=1764795115","url":"https:\/\/www.qtparts.fi\/en-gb\/products\/cp4-hpfp-metering-valve-upgrade","provider":"QT Parts","version":"1.0","type":"link"}