{"product_id":"apr-intake-system-b9-s4-3-0t","title":"APR PEX Intake System — Audi B9 S4 3.0T","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eUnlock the full airflow potential of your B9 Audi S4 or S5 with the APR Full Intake System for the EA839 3.0T engine. Unlike intake upgrades that only replace part of the factory system, APR's complete solution replaces everything from the inlet scoop to the turbocharger inlet, eliminating airflow restrictions throughout the entire intake tract. Designed to improve turbocharger efficiency, throttle response, and overall performance, the system delivers measurable power gains while maintaining OEM-quality fitment, emissions compliance, and everyday drivability.\u003c\/p\u003e\n\u003ch2\u003eDetails\u003c\/h2\u003e\n\u003ch4 class=\"PDq2pG_selectionAnchorContainer\"\u003e\n\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerformance Features\u003c\/strong\u003e\u003c\/span\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003ch5\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eMaximum Airflow\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003eThe APR Full Intake System replaces the complete factory intake path with larger, less restrictive components, increasing airflow by \u003cstrong\u003e31%\u003c\/strong\u003e over stock (525 CFM vs. 400 CFM). The result is improved turbocharger efficiency, reduced pressure drop, and faster turbo spool.\u003c\/p\u003e\n\u003ch5\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eProven Power Gains\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003eOn an APR Stage 1 (93 Octane) equipped Audi S4, the Full Intake System produced gains of \u003cstrong\u003e+19 AWHP\u003c\/strong\u003e and \u003cstrong\u003e+20 AWFT-LBS\u003c\/strong\u003e without requiring additional tuning.\u003c\/p\u003e\n\u003ch5\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eOptimized Intake Design\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003eTo maximize airflow in the limited engine bay space, APR utilizes high-temperature composite materials that allow thinner wall construction and a larger internal diameter than traditional aluminum tubing. The result is increased airflow while maintaining excellent heat resistance and durability.\u003c\/p\u003e\n\u003ch5\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eOEM+ Engineering\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003eDesigned as a complete bolt-on replacement, the system includes a heat-shielded PEX airbox, oversized washable performance filter, billet turbo inlet adapter, and all necessary installation hardware for seamless OEM-quality fitment.\u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eConstruction \u0026amp; Design\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003ch5\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eComplete Intake Replacement\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003eUnlike partial intake upgrades, APR replaces every major intake component, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInlet scoop\u003c\/li\u003e\n\u003cli\u003eAirbox\u003c\/li\u003e\n\u003cli\u003eHigh-flow air filter\u003c\/li\u003e\n\u003cli\u003eTurbo inlet pipe\u003c\/li\u003e\n\u003cli\u003eBillet turbo inlet adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis eliminates factory bottlenecks throughout the entire intake system.\u003c\/p\u003e\n\u003ch5\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eHigh-Flow Air Filter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003eThe oversized \u003cstrong\u003e7\" × 7\"\u003c\/strong\u003e pleated cotton gauze air filter provides exceptional airflow and filtration while remaining fully washable and reusable for long-term service life.\u003c\/p\u003e\n\u003ch5\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFuture-Proof Design\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003eThe billet turbo inlet adapter is designed to accommodate larger turbocharger upgrades with a simple adapter change, making the intake compatible with future performance builds.\u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eComplete intake system replacement from inlet scoop to turbocharger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e31% greater airflow\u003c\/strong\u003e than the factory intake\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+19 AWHP\u003c\/strong\u003e and \u003cstrong\u003e+20 AWFT-LBS\u003c\/strong\u003e gains on APR Stage 1 (93 Octane)\u003c\/li\u003e\n\u003cli\u003eReduced pressure drop for improved turbo efficiency\u003c\/li\u003e\n\u003cli\u003eFaster turbo spool and improved throttle response\u003c\/li\u003e\n\u003cli\u003eHeat-resistant composite turbo inlet with maximum internal diameter\u003c\/li\u003e\n\u003cli\u003eHeat-shielded PEX airbox\u003c\/li\u003e\n\u003cli\u003eOversized washable cotton gauze performance filter\u003c\/li\u003e\n\u003cli\u003eBillet turbo inlet adapter\u003c\/li\u003e\n\u003cli\u003eIncludes all required clamps, gaskets, and installation hardware\u003c\/li\u003e\n\u003cli\u003eNo ECU tuning required\u003c\/li\u003e\n\u003cli\u003eEmissions compliant\u003c\/li\u003e\n\u003cli\u003eEnhanced intake and turbo sound without excessive cabin noise\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCompatibility Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFits \u003cstrong\u003eB9 Audi S4\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFits \u003cstrong\u003eB9 Audi S5\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEA839 3.0T Turbocharged V6\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eCompatible with factory and APR Stage 1 vehicles\u003c\/li\u003e\n\u003cli\u003eDesigned to support future larger turbocharger upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eImportant Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePerformance gains of \u003cstrong\u003e+19 AWHP\u003c\/strong\u003e and \u003cstrong\u003e+20 AWFT-LBS\u003c\/strong\u003e were measured on an APR Stage 1 (93 Octane) equipped vehicle.\u003c\/li\u003e\n\u003cli\u003eThis intake is designed as a complete replacement for the factory intake system, providing maximum airflow without reducing components back to factory diameter.\u003c\/li\u003e\n\u003cli\u003eThe washable cotton gauze air filter is reusable and should be cleaned and serviced periodically for optimal performance.\u003c\/li\u003e\n\u003cli\u003eNo ECU tuning is required for installation, making the system an ideal upgrade for both stock and tuned vehicles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e","brand":"APR","offers":[{"title":"Default Title","offer_id":52331367792942,"sku":"CI100072","price":579.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/1719\/1726\/files\/Screenshot_2026-08-01_093239.png?v=1785591181","url":"https:\/\/shopicwp.com\/products\/apr-intake-system-b9-s4-3-0t","provider":"Inner Circle Wheels and Performance","version":"1.0","type":"link"}