{"product_id":"rail-pressure-regulator-valve","title":"Rail Pressure Regulator Valve","description":"The RS4 Rail Pressure Regulator Valve (PRV) is a critical component for high-performance 2.0 TFSI EA113 engines, designed to unlock the full potential of your high-pressure fuel pump (HPFP). The original pressure regulating valve on the fuel rail acts as a mechanical fuse, opening around 110-120 bar to protect the system but causing fuel cuts during hard acceleration in modified setups. This valve, sourced from the Audi RS4 B7 4.2L V8, features a much firmer setting, remaining closed until 136-140 bar, which allows your HPFP to deliver maximum pressure to the injectors.\n\nThis direct replacement valve is crucial for preventing high-RPM fuel cut-outs, especially when running Stage 2, Stage 2+, E85 fuel conversions, or larger turbochargers (Stage 3). It is compatible with SP98 and E85 Bioethanol fuels. The valve's precise mechanical calibration and OEM VAG quality ensure motorsport reliability. It's important to note that this is a sensitive engine component for competition use and is not eligible for return, exchange, or refund. Installation requires professional expertise due to the high pressures involved, and the manufacturer accepts no liability for breakage, leaks, or fire.\n\nThis valve is specifically designed for 2.0 TFSI engines with a timing belt (EA113) and is not generally compatible with 2.0 TSI EA888 Gen 3 (MQB) engines. Vehicle fitment includes VW Golf 5 GTI\/Edition 30\/Pirelli (AXX, BWA, BYD), Golf 6 R\/Scirocco R\/Polo R WRC (CDLF, CDLA, CDLC), Audi S3\/A3 8P (BHZ, BWA, CDLA), Audi TT\/TTS 8J (BWA, CDLA, CDLB), and Seat Leon Cupra\/Cupra R 1P (BWJ, CDLD, CDLA).\n\nInstallation of this valve necessitates an engine remap (Stage 2+) to adjust for the altered fuel system thresholds. It must be used in conjunction with a reinforced High Pressure Pump (HPFP) piston kit, as this valve alone does not generate pressure but prevents leakage. Always depressurize the fuel system before installation and ensure proper torqueing to avoid damaging the fuel rail threads.","brand":"RS4","offers":[{"title":"Default Title","offer_id":52663555424568,"sku":"079 130 757","price":91.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687658323.jpg?v=1784327996","url":"https:\/\/store.motormia.co\/products\/rail-pressure-regulator-valve","provider":"MOTORMIA","version":"1.0","type":"link"}