{"product_id":"2018-2025-audi-rs4-rs5-performance-ecu-tune-b9-b9-5-rs4-rs5","title":"2018-2025 Audi RS4\/RS5 Performance ECU Tune | B9\/B9.5 RS4\/RS5","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0356\/1596\/5321\/files\/Checkout_480x480.png?v=1688114282\" width=\"561\" height=\"228\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003e*Please email us\u003cspan\u003e \u003c\/span\u003eany special requests*\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEngineered with a performance-first mindset, GCA Performance ECU tuning redefines how your vehicle responds, pulls, and accelerates. This isn’t just added power—it’s a complete transformation in drivability. Throttle input becomes immediate, torque delivery is stronger and more consistent, and the entire powerband feels sharper and more responsive. From the mid-range surge to top-end pull, every part of the rev range is optimized to keep the car pushing harder, longer, and more efficiently. GCA Performance securely saves your factory ECU data, allowing you to revert your vehicle back to the stock settings at any time. \u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eWe Stand Behind Our Products\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAll items from us have a 1-Year Warranty! \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cspan style=\"text-decoration: underline; color: #000000;\"\u003e\u003cstrong\u003eTuning Specs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eFits: \u003cmeta charset=\"utf-8\"\u003e2018 2019 2020 2021 2022 2023 2024 \u003cmeta charset=\"utf-8\"\u003e2025 B9 B9.5 Audi RS4 RS5 2.9L V6 Twin Turbo TFSI Engine\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eDownpipe readiness with check engine light suppression (for off-road use only)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cmeta charset=\"utf-8\"\u003eEnhanced exhaust acoustics with extended or adjustable burble\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eFactory speed governor removal for unrestricted performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cmeta charset=\"utf-8\"\u003eOctane-specific calibration tailored to your fuel quality\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eCold start behavior fully configurable (On\/Off)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e100% Reversible, always able to go back to stock at any time\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eStage 1 (Factory Downpipes) \u0026amp; Stage 2 (GCA Performance Downpipes) Tuning available (*We will clarify which Stage you need in the tuning instructions after purchase. We do not charge extra for Stage 2 tuning*)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cspan style=\"text-decoration: underline; color: #000000;\"\u003e\u003cstrong\u003eApp-Controlled ECU Tuning Device (Optional)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eTune from Your Phone\u003c\/strong\u003e: Use the mobile app to install the ECU Tune from your home, no laptop or shop visit required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eQuick Tune Switching:\u003c\/strong\u003e Easily switch between the Stock ECU Tune and our Performance ECU tune through the app\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eWi-Fi \u0026amp; Bluetooth Connectivity\u003c\/strong\u003e: Quickly and reliably connect the handheld device to your smartphone to exchange tuning files\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eBuilt-in Diagnostic Tools:\u003c\/strong\u003e Scan codes, view live vehicle data, and record data logs directly within the app\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003ePaired to Your Vehicle\u003c\/strong\u003e: Each device is securely assigned to one vehicle, giving you convenient access to your stock and performance tune files\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cspan style=\"text-decoration: underline; color: #000000;\"\u003e\u003cstrong\u003eTuning Gains\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eHorsepower Gain: 60 HP Increase\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eTorque Gain: 60 TQ Increase\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cspan style=\"text-decoration: underline; color: #000000;\"\u003e\u003cstrong\u003eTuning Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eOnce purchased, we will email you over instructions\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #000000;\"\u003eThe car is able to be tuned via a cable, which we will provide to you\u003c\/span\u003e\u003cspan style=\"color: #000000;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline; color: #000000;\"\u003e\u003cstrong\u003eShipping\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eFREE SHIPPING to the lower 48 States!\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan color=\"#000000\" style=\"color: #000000;\"\u003e5-8 Days total turn around time\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eWe ship all of our items through UPS or FedEx\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003eWe always recommend Professional Installation. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDISCLAIMER:\u003c\/strong\u003e\u003cspan\u003e Removing, disabling, or altering emissions equipment on a pollution-controlled road vehicle is illegal. Installing devices or software that trick, disable, or modify emissions controls and monitors on a pollution-controlled road vehicle is also illegal. This product is sold only for racing, competition, track, hobby, or other off-road use. Its use is prohibited in any motor vehicle that is subject to emissions inspection or control. Installation and usage of after-market parts and software may impact drivability, reliability, emissions, insurance coverage and factory warranty. Legal in California only for racing vehicles that may never be used, or registered or licensed for use, upon a highway. \u003c\/span\u003eAll installation-risk and use-risk is borne by the end-user and installer of these parts.\u003c\/p\u003e","brand":"German-Car-Accessories","offers":[{"title":"No ECU Tuning Device","offer_id":49054615666910,"sku":"AD-B9RS4-1003-A-1","price":999.99,"currency_code":"USD","in_stock":true},{"title":"Yes ECU Tuning Device","offer_id":49054615699678,"sku":"AD-B9RS4-1003-A-2","price":1499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0356\/1596\/5321\/files\/2018-2025-audi-rs4-rs5-performance-ecu-tune-b9-5-tunes-142.jpg?v=1789033151","url":"https:\/\/german-car-accessories.com\/products\/2018-2025-audi-rs4-rs5-performance-ecu-tune-b9-b9-5-rs4-rs5","provider":"German Car Accessories","version":"1.0","type":"link"}