{"product_id":"dual-piston-blow-off-valve-v2-bov-bmw-n54-135i-335i-535i-e90-e92-e88-twin-turbo","title":"Dual Piston Blow off Valve V2 (BOV) BMW N54 135I 335I 535I E90 E92 E88 TWIN TURBO","description":"\u003ch2\u003eCarrot Top Tuning Dual-Piston Atmospheric Blow-Off Valve – V2\u003c\/h2\u003e\n\u003cp\u003eDesigned for performance turbocharged vehicles equipped with a mass air flow (MAF) sensor, the \u003cstrong\u003eCarrot Top Tuning Dual-Piston Atmospheric Blow-Off Valve V2\u003c\/strong\u003e delivers fast response, reliable boost control, and the unmistakable \u003cem\u003e“whoosh”\u003c\/em\u003e sound enthusiasts expect — without the common drivability issues found in single-piston or diaphragm-style valves.\u003c\/p\u003e\n\u003cp\u003eThis valve is designed to connect directly to factory (OEM) charge pipes and is also compatible with most aftermarket charge pipes that accept a standard blow-off valve flange or hose-style connection.\u003c\/p\u003e\n\u003ch3\u003eBillet Construction \u0026amp; Improved V2 Design\u003c\/h3\u003e\n\u003cp\u003eMachined from high-quality \u003cstrong\u003ebillet aluminum\u003c\/strong\u003e, this Version 2 valve features a revised internal layout for improved airflow and durability. The updated design replaces the previous Delrin secondary piston with a \u003cstrong\u003efully billet aluminum piston\u003c\/strong\u003e for increased strength and longevity under high boost and heat conditions.\u003c\/p\u003e\n\u003cp\u003eThe valve is fully serviceable and easy to maintain, featuring a \u003cstrong\u003etwist-off top hat\u003c\/strong\u003e that allows quick disassembly for cleaning or inspection.\u003c\/p\u003e\n\u003ch3\u003eHow the Dual-Piston System Works\u003c\/h3\u003e\n\u003cp\u003eUnlike traditional single-piston blow-off valves that rely on a single spring and vacuum signal, this valve uses a \u003cstrong\u003ecounter-balanced dual-piston design\u003c\/strong\u003e with independent spring rates to improve drivability on MAF-based vehicles.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLower Primary Piston:\u003c\/strong\u003e Remains fully closed at idle and during light vacuum, preventing unmetered air from escaping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpper Secondary Piston:\u003c\/strong\u003e Uses a lighter spring and responds instantly to throttle lift, allowing rapid venting under boost.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis design prevents the valve from leaking air at idle — a common issue with single-piston or diaphragm valves — which can otherwise cause rough idle, stalling, or inconsistent fueling.\u003c\/p\u003e\n\u003ch3\u003ePerformance Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFaster throttle response between shifts\u003c\/li\u003e\n\u003cli\u003eMore consistent boost pressure retention\u003c\/li\u003e\n\u003cli\u003eReduced risk of idle and drivability issues on MAF vehicles\u003c\/li\u003e\n\u003cli\u003e100% atmospheric venting for maximum sound and response\u003c\/li\u003e\n\u003cli\u003eImproved sealing compared to single-piston designs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDual-piston, counter-balanced design\u003c\/li\u003e\n\u003cli\u003eFully billet aluminum construction\u003c\/li\u003e\n\u003cli\u003eVersion 2 internal redesign for improved airflow\u003c\/li\u003e\n\u003cli\u003eBillet secondary piston (no Delrin)\u003c\/li\u003e\n\u003cli\u003eEasy service and maintenance\u003c\/li\u003e\n\u003cli\u003eAggressive atmospheric discharge sound\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBuilt for enthusiasts who demand reliability, performance, and sound — the \u003cstrong\u003eCarrot Top Tuning Dual-Piston Atmospheric Blow-Off Valve V2\u003c\/strong\u003e is a proven upgrade for serious turbo setups.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x Dual-Piston Atmospheric Blow-Off Valve\u003c\/li\u003e\n\u003cli\u003e2x Inlet Pipe Plug\u003c\/li\u003e\n\u003cli\u003e4x Hose Clamps\u003c\/li\u003e\n\u003cli\u003e2x Silicone Adapter \u003cem\u003e(BMW N54 applications only)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Carrot Top Tuning","offers":[{"title":"Silver","offer_id":48977100701879,"sku":"DPBOV-SIL-V2-X2","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":48977100734647,"sku":"DPBOV-BLK-V2-X2","price":119.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/6429\/1511\/files\/IMG_9670_1.jpg?v=1786325464","url":"https:\/\/milkymotorsports.com\/products\/dual-piston-blow-off-valve-v2-bov-bmw-n54-135i-335i-535i-e90-e92-e88-twin-turbo","provider":"Milky Motorsports","version":"1.0","type":"link"}