{"product_id":"blow-off-valve-diverter-for-audi-rs3-2015-2018-2-5l","title":"Blow off Valve Diverter for Audi RS3 (2015-2018) 2.5L","description":"\u003ch2\u003eDirect-Fit Billet Blow Off Valve Diverter for 2015-2018 Audi RS3\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Blow Off Valve Diverter replaces the failure-prone factory diaphragm assembly on the 2015-2018 Audi RS3 to eliminate boost leakage and accelerate turbo recovery during aggressive gearshifts.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Audi RS3 Diverter Valve Weakness\u003c\/h3\u003e\n\u003cp\u003eFactory boost control on the \u003cstrong\u003e8V\u003c\/strong\u003e platform relies on an OE diverter valve with a polymer internal plunger and thin elastomeric diaphragm. Under sustained manifold pressures exceeding 18 psi on the \u003cstrong\u003eCZGB\u003c\/strong\u003e and aluminum-block \u003cstrong\u003eDAZA\u003c\/strong\u003e 2.5L TFSI engines, thermal cycling and high turbine backpressure rupture the flexible diaphragm or cause the plastic slider to bind in its bore. The resulting unmetered pressure bleed produces delayed spool-up, transient boost loss through the 7-speed S-Tronic shifts, and intermittent underboost DTCs.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis sandwich-style atmospheric diverter upgrade features a CNC-machined billet aluminum housing finished in hard-anodized black for structural rigidity under thermal load. Internal pressure regulation utilizes a precision-ground brass\/aluminum piston with a calibrated stainless steel return spring, preventing premature opening under high-boost conditions while ensuring rapid pressure relief off-throttle. Viton sealing O-rings prevent pressure bleed between the factory solenoid base and compressor cover, venting excess charge air to the atmosphere with zero boost drop across shifts.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2015-2018 Audi RS3\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2.5L TFSI (CZGB\/DAZA) \/ 8V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e394 hp \/ 354 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eT9451, BOV113 Reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2015 Audi RS3 2.5L TFSI (8V Sportback)\u003c\/li\u003e\n  \u003cli\u003e2016 Audi RS3 2.5L TFSI (8V Sportback)\u003c\/li\u003e\n  \u003cli\u003e2017 Audi RS3 2.5L TFSI (8V Sedan \/ Sportback)\u003c\/li\u003e\n  \u003cli\u003e2018 Audi RS3 2.5L TFSI (8V Sedan \/ Sportback)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the 8V RS3?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2015-2018 Audi RS3 equipped with the 2.5L TFSI engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill venting to atmosphere trigger a check engine light on the 2.5L TFSI?\u003c\/strong\u003e\u003cbr\u003e No, the factory speed-density and MAP-based engine management retains precise target fueling without triggering CEL codes or limp mode.\u003c\/p\u003e\n\n\u003ch3\u003eThe Audi Engineering Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to meet the exact tolerances of European forced-induction applications, this billet diverter kit ensures zero solenoid signal degradation, factory ECU integration, and leak-free reliability on tuned or stock 2.5L turbo platforms.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50516398964984,"sku":"DS-E7U4O17C6","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/blow-off-valve-diverter-for-audi-rs3-2015-2018-2-5l-1.jpg?v=1789484007","url":"https:\/\/performancechiptuning.com\/fr\/products\/blow-off-valve-diverter-for-audi-rs3-2015-2018-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}