{"product_id":"tth-upgrade-turbolader-audi-rs4-b9-600ps","title":"TTH Upgrade Turbocharger (600 HP): Audi RS4 B9 ","description":"\u003c!-- ===================== PRODUCT CONTENT ===================== --\u003e\n\u003carticle itemtype=\"https:\/\/schema.org\/Product\" itemscope=\"\" class=\"kth-wrap\"\u003e\u003cheader\u003e\n\u003ch2 itemprop=\"name\"\u003e TTH EA839 600 Turbocharger Upgrade\u003cbr\u003e Audi RS4 B9 \u0026amp; RS5 F5 – 2.9 TFSI Bi-Turbo\u003c\/h2\u003e\n\n\u003cp class=\"kth-lead\"\u003e Optimized OEM twin turbochargers for the EA839 – noticeably more air mass, reduced exhaust back pressure and stable performance as a basis for setups up to approx. 600 hp.\u003c\/p\u003e\n\n\u003c\/header\u003e\n\u003csection\u003e\n\u003ch2\u003e Description\u003c\/h2\u003e\n\n \u003cp itemprop=\"description\"\u003eThe \u003cstrong\u003eTTH EA839 600 turbocharger upgrade\u003c\/strong\u003e is based on the OEM \u003cstrong\u003eBorgWarner\/Porsche\u003c\/strong\u003e twin-turbochargers of the \u003cstrong\u003eVAG EA839 2.9 TFSI\u003c\/strong\u003e engine. The goal is a significantly improved flow efficiency on both the compressor and exhaust sides, enabling a \u003cstrong\u003epower increase of up to approximately 600 hp\u003c\/strong\u003e when combined with suitable peripherals and professional ECU tuning. The focus is on \u003cstrong\u003erapid response, pressure stability\u003c\/strong\u003e , and a robust design for performance-oriented modifications.\u003c\/p\u003e\n\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003e Technology \u0026amp; Construction\u003c\/h2\u003e\n\n\u003cdiv class=\"kth-card\"\u003e\n\n\u003cul class=\"kth-list\"\u003e\n\n\u003cli\u003e Milled \u003cstrong\u003eextended-tip compressor wheels\u003c\/strong\u003e with modern geometry\u003c\/li\u003e\n\n\u003cli\u003e CNC-optimized compressor housings for gap minimization\u003c\/li\u003e\n\n\u003cli\u003e Turbine grinding to reduce exhaust back pressure\u003c\/li\u003e\n\n\u003cli\u003e Precise fine balancing for smooth running\u003c\/li\u003e\n\n\u003cli\u003e OEM base with \u003cstrong\u003eplug-and-play\u003c\/strong\u003e assembly\u003c\/li\u003e\n\n\u003cli\u003e Manufacturing and calibration in Germany\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003e Application area \u0026amp; performance\u003c\/h2\u003e\n\n\u003cdiv class=\"kth-card\"\u003e\n\n\u003cul class=\"kth-list\"\u003e\n\n \u003cli\u003eDesigned for setups \u003cstrong\u003eup to approximately 600 hp\u003c\/strong\u003e (vehicle dependent)\u003c\/li\u003e\n\n\u003cli\u003e Improved responsiveness compared to the standard model.\u003c\/li\u003e\n\n\u003cli\u003e More power reserve at increased boost pressure\u003c\/li\u003e\n\n\u003cli\u003e Stable performance even under high thermal stress\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003e Conversion note\u003c\/h2\u003e\n\n\u003cdiv class=\"kth-card\"\u003e\n\n\u003cul class=\"kth-list\"\u003e\n\n\u003cli\u003e This involves the \u003cstrong\u003eprocessing of the delivered turbochargers.\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e Prerequisite: technically flawless condition of the standard turbochargers\u003c\/li\u003e\n\n\u003cli\u003e In case of damage or irregularities, a preliminary inspection is required.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003e compatibility\u003c\/h2\u003e\n\n\u003cdiv class=\"kth-card\"\u003e\n\n\u003cul class=\"kth-list\"\u003e\n\n\u003cli\u003e Audi RS4 B9 – 2.9 TFSI Bi-Turbo (EA839)\u003c\/li\u003e\n\n\u003cli\u003e Audi RS5 F5 – 2.9 TFSI Bi-Turbo (EA839)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"kth-muted\"\u003e The decisive factor is the \u003cstrong\u003eEA839 2.9 TFSI Bi-Turbo\u003c\/strong\u003e engine. The achievable power output depends on the overall setup, hardware specifications, and fuel quality.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003e Notes\u003c\/h2\u003e\n\n \u003cp class=\"kth-muted\"\u003eInstallation and commissioning must be carried out by a \u003cstrong\u003equalified workshop\u003c\/strong\u003e . Additional engine components and \u003cstrong\u003eindividual engine software tuning\u003c\/strong\u003e are mandatory for achieving the desired performance. Modifications to power output and emissions may restrict use on public roads.\u003c\/p\u003e\n\n\u003c\/section\u003e\n\u003cp class=\"kth-muted\"\u003e © Kraftfahrzeug Technik Hannover (KTH)\u003c\/p\u003e\n\n\u003c\/article\u003e\n\u003cstyle\u003e\n  .kth-wrap{\n    --blue:#0b245b; --text:#111; --muted:#6b7280; --border:#e5e7eb;\n    font-family:\"Inter\",system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;\n    color:var(--text); line-height:1.6; max-width:800px; margin:0 auto; padding:2rem 1rem;\n  }\n  .kth-wrap h1{font-size:2rem;font-weight:700;color:var(--blue);margin-bottom:.5rem}\n  .kth-wrap h2{font-size:1.2rem;font-weight:600;color:var(--blue);margin-top:2rem;margin-bottom:.5rem}\n  .kth-lead{color:var(--muted);margin-bottom:1.5rem}\n  .kth-card{border:1px solid var(--border);border-radius:10px;padding:1rem 1.25rem;margin-top:.5rem}\n  .kth-list{margin:0;padding-left:1.25rem}\n  .kth-list li{margin-bottom:.3rem}\n  .kth-muted{color:var(--muted);margin-top:1rem;font-size:.9rem}\n  h2 {font-size: 32px !important;}\n  h3 {font-size: 26px !important;}\n\u003c\/style\u003e","brand":"KTH Shop","offers":[{"title":"Default Title","offer_id":56943099937093,"sku":"TTH-EA839-600B","price":2399.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1008\/7786\/1189\/files\/1P2UHYdrjBApRc.jpg?v=1769444695","url":"https:\/\/kthshop.de\/en\/products\/tth-upgrade-turbolader-audi-rs4-b9-600ps","provider":"KTH Shop","version":"1.0","type":"link"}