{"product_id":"boss800-hybrid-audi-b9","title":"CTS Turbo BOSS800 Hybrid Turbocharger Upgrade for B9 Audi S4, Audi S5, Audi SQ5 and more","description":"\u003cp data-end=\"528\" data-start=\"195\"\u003eWe are excited to announce our new BOSS800 hybrid turbo for the Audi\/Porsche EA839 3.0T platform. This is a direct replacement upgrade that significantly increases airflow while retaining OEM-style fitment and drivability. This hybrid unit is optimized for higher boost efficiency and improved top-end power without sacrificing low-RPM response. The turbo utilizes an upgraded compressor and turbine configuration, allowing it to support a wide range of fuel blends from pump gas to ethanol mixes. All testing shown was performed on the same vehicle and hardware, with only fuel content changed between runs.\u003c\/p\u003e\n\u003cp data-end=\"528\" data-start=\"195\"\u003ePower gains scale predictably with ethanol content, showing strong midrange torque and sustained power through the upper RPM range. Boost response remains smooth and controlled, making the turbo suitable for both street and track-focused builds. This turbo pulls all the way to redline and has more potential with additional fueling.\u003c\/p\u003e\n\u003cp data-end=\"528\" data-start=\"195\"\u003eThe best part is that this is a full brand-new unit that does not require a core and it is compatible with many off-the-shelf stage 3 tuning.\u003c\/p\u003e\n\u003ch3 data-end=\"895\" data-start=\"836\"\u003eTurbocharger specs:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e66mm turbo inlet, larger turbo inlet is required\u003c\/li\u003e\n\u003cli\u003e66mm 7+7 design billet compressor wheel\u003c\/li\u003e\n\u003cli\u003e63mm 9 blade high-flow turbine wheel\u003c\/li\u003e\n\u003cli\u003eStainless steel exhaust housing, matched to increased flow of the turbine wheel\u003c\/li\u003e\n\u003cli\u003eHeavy duty bearings and thrust washers\u003c\/li\u003e\n\u003cli\u003eVSR balanced\u003c\/li\u003e\n\u003cli\u003eCompatible with any exhaust, any charge pipe, and 66mm turbo inlet\u003c\/li\u003e\n\u003cli\u003eTransfer of factory diverter valve and boost pressure relief valve (06M133554A, pay attention on how it is installed).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"895\" data-start=\"836\"\u003eDyno Results from our friends at Logic Street Performance (1\/4 mile time: 10.29 at 140mph)\u003c\/h3\u003e\n\u003cul data-end=\"1127\" data-start=\"896\"\u003e\n\u003cli data-end=\"947\" data-start=\"896\"\u003e\n\u003cp data-end=\"947\" data-start=\"898\"\u003e\u003cstrong data-end=\"920\" data-start=\"898\"\u003eRun 1 – 92 Octane:\u003c\/strong\u003e\u003cbr data-end=\"923\" data-start=\"920\"\u003e561 hp \/ ~532 lb-ft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1007\" data-start=\"948\"\u003e\n\u003cp data-end=\"1007\" data-start=\"950\"\u003e\u003cstrong data-end=\"980\" data-start=\"950\"\u003eRun 2 – E50 (92 + pump E):\u003c\/strong\u003e\u003cbr data-end=\"983\" data-start=\"980\"\u003e640 hp \/ ~643 lb-ft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1067\" data-start=\"1008\"\u003e\n\u003cp data-end=\"1067\" data-start=\"1010\"\u003e\u003cstrong data-end=\"1040\" data-start=\"1010\"\u003eRun 3 – E55 (92 + pump E):\u003c\/strong\u003e\u003cbr data-end=\"1043\" data-start=\"1040\"\u003e658 hp \/ ~654 lb-ft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1127\" data-start=\"1068\"\u003e\n\u003cp data-end=\"1127\" data-start=\"1070\"\u003e\u003cstrong data-end=\"1100\" data-start=\"1070\"\u003eRun 4 – E60 (92 + pump E):\u003c\/strong\u003e\u003cbr data-end=\"1103\" data-start=\"1100\"\u003e671 hp \/ ~663 lb-ft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e**Note that these results were achieved in a vehicle with full bolt-ons and upgraded fueling system (RS6 injectors, HPFP and LPFP upgrade, 4BAR Map sensors) and Logic Street Performance stage 3 tuning. Your result may vary.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eParts required for installation (not included):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2x 06M253039G – exhaust manifold gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e1x\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"il\"\u003e059253232C\u003c\/span\u003e – exhaust ring gasket\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e1x WHT006901A – oil feed o-ring\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e3x WHT007689 – oil feed and coolant o-ring\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e4x WHT004982 – barrel nut\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e4x N91130801 – exhaust nut\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e1x WHT007923 – connecting pipe o-ring\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e2x 8K0253115K – exhaust gasket\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e1x N0138441 – seal for boost pressure relief (jet) valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eFitment for vehicles with EA839 engines. Check with your tuner to compatible software:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e2018 – 2023 B9\/B9.5 Audi S4 3.0T\u003c\/li\u003e\n\u003cli\u003e2018 – 2023 B9\/B9.5 Audi S5 3.0T\u003c\/li\u003e\n\u003cli\u003e2018 – 2023 B9\/B9.5 Audi SQ5 3.0T\u003c\/li\u003e\n\u003cli\u003e2020 – 2022 4M Audi Q7 3.0T\u003c\/li\u003e\n\u003cli\u003e2019 – 2022 4M Audi Q8 3.0T\u003c\/li\u003e\n\u003cli\u003e2019 – 2022 C8 Audi A6 3.0T\u003c\/li\u003e\n\u003cli\u003e2019 – 2022 C8 Audi A7 3.0T\u003c\/li\u003e\n\u003cli\u003e2020 – 2024 C8 Audi AllRoad 3.0T\u003c\/li\u003e\n\u003cli\u003e2019 – 2023 D5 Audi A8 3.0T\u003c\/li\u003e\n\u003cli\u003e2019 – 2021 Porsche Macan S 3.0T\u003c\/li\u003e\n\u003cli\u003e2019 – 2023 Porsche Cayenne 3.0T\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAll CTS Turbo orders are final. No returns or exchanges can be made.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAll cancellations are subject to a 5% restocking fee.\u003c\/p\u003e","brand":"BOOTMOD3 TUNING USA","offers":[{"title":"Default Title","offer_id":45546784293037,"sku":"TR-2251","price":2374.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/9299\/4989\/files\/image_2026-01-11_190952315.png?v=1768176603","url":"https:\/\/bootmod3tuning.com\/products\/boss800-hybrid-audi-b9","provider":"BOOTMOD3 TUNING USA","version":"1.0","type":"link"}