{"product_id":"tunezilla-performance-ecu-tune-audi-b8-rs5-4-2l-fsi","title":"TuneZilla Performance ECU Tune - Audi B8 RS5 4.2L FSI","description":"\u003cdiv data-v-8b585bbc=\"\" data-v-55217218=\"\" class=\"description\"\u003e\n\u003cdiv data-v-8b585bbc=\"\" class=\"content__html\"\u003e\n\u003cp\u003e\u003cbr\u003eBring new life to Audi’s high-revving 4.2L naturally aspirated V8 with our Stage 1 ECU calibration. Designed specifically for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e93 octane fuel\u003c\/strong\u003e, this tune sharpens throttle response, improves mid-range torque, and delivers measurable horsepower gains while preserving the linear, high-RPM character that makes the RS5 so engaging to drive.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 data-v-8b585bbc=\"\" class=\"description__title\"\u003eRequirements\u003c\/h3\u003e\n\u003cdiv data-v-8b585bbc=\"\" class=\"content__html\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Gains:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e+19 HP \/ +14 TQ\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFinal Output:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e469 HP \/ 331 lb-ft TQ\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFuel Requirement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e93 Octane\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHardware Requirements:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNone (compatible with stock intake \u0026amp; exhaust)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMust be flashed at a Tunezilla dealer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3 data-v-8b585bbc=\"\" class=\"description__title\"\u003eNotes\u003c\/h3\u003e\n\u003cdiv data-v-8b585bbc=\"\" class=\"content__html\"\u003e\n\u003ch3 id=\"why-choose-tunezilla\" class=\"heading--link\"\u003e\u003cstrong\u003eWhy Choose TuneZilla?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAt\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTuneZilla\u003c\/strong\u003e, we strive for an OEM level of drivability and reliability. Our team of calibrators from around the world painstakingly work to deliver\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003erepeatable performance\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eon all of our base maps.\u003c\/p\u003e\n\u003cp\u003eOne of the biggest differences between our tunes and many competitors’ is our\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003elinear, OEM-like throttle response\u003c\/strong\u003e. Some software tuners artificially increase throttle sensitivity to give a peaky feeling under acceleration, masking a weaker torque curve. In contrast, our calibrations are designed to provide the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003emost usable and consistent power curve possible\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— maintaining a strong pull without torque falling off midway through the rev range.\u003c\/p\u003e\n\u003cp\u003eBy generating peak power as early as possible while keeping the torque curve strong throughout, our tunes not only achieve an attractive top-end number but also deliver a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ewider, more enjoyable powerband\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethat translates to real-world performance you can feel every time you drive.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TuneZilla","offers":[{"title":"Stage 1 (469 HP \/ 331 LB-FT)","offer_id":49577895755969,"sku":"FSI-42L-450-001","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0005\/7773\/2663\/files\/tunezillabox_51964cb2-9382-4939-bd84-0a8a9ad52d81.webp?v=1759785425","url":"https:\/\/www.urotuning.com\/products\/tunezilla-performance-ecu-tune-audi-b8-rs5-4-2l-fsi","provider":"UroTuning","version":"1.0","type":"link"}