E85 & Fuel Pump Upgrade TRANSFORMS My B9 Audi S4! Flex Fuel Sensor Install | Road to Stage 2+

🔧 Road to Stage 2+ | Episode 7 🔧 The B9 Audi S4 is getting a full fuel system overhaul! In today’s video we’re installing a flex fuel sensor, upgrading the fuel pump and making the switch to E85! This is a huge step in the Road to Stage 2+ build and the car is going to love every drop of it! 🔥 🔔 Subscribe and follow the Road to Stage 2+ series — the San Antonio drive vlog is coming next and you do NOT want to miss it! 📦 Parts Used: 🔗 [Flex Fuel Sensor Link Here. No need for add ons] https://fuel-it.com/products/fuel-it-... 🔗 https://www.034motorsport.com/034moto... 🔗 https://www.034motorsport.com/high-pr... 🔗 GM Genuine Parts 13507128 Flex... https://www.amazon.com/dp/B073ZQ1G2P?... 🔗 OTC 4572 Large Valve Spring... https://www.amazon.com/dp/B000F5ECUY?... 🔗 Dorman 800-091 Fuel Line Quick... https://www.amazon.com/dp/B000E35WKG?... 🔗 Dorman 800-085 Fuel Line Quick... https://www.amazon.com/dp/B000E35WJW?... 🔗 WGGE WG-015 Professional 8-inch... https://www.amazon.com/dp/B073YG65N2?... 🔗 DTLDZSC Thick Copper Electric... https://www.amazon.com/dp/B0CYWSVM3T?... 🔗 Oetiker Stepless Size 5/8" (15.7... https://www.amazon.com/dp/B01GTWLXCQ?... 🔗 Oetiker 14100396 Pincer, Straight... https://www.amazon.com/dp/B01LBHX1CY?... 🔗 Zip Ties Assorted... https://www.amazon.com/dp/B0C2Z4L3S6?... ⏱ Timestamps: 0:00 - Intro 0:26 - Parts & Tools Needed 2:04 - Fuel Pump Upgrade 15:05 - Flex Fuel Sensor Install 25:25 - First Fill Up On E85 28:25 - Flashing to E85 31:00 - Final Thoughts & What’s Next 📱 Follow Me: Instagram: cesar_vlogs223 TikTok: cesarvlogs223 #AudiS4 #B9S4 #RoadToStage2 #E85 #FlexFuel #FuelPump #AudiMods #AudiPerformance #B9S4Build #AudiTuning #CarBuild #FlexFuelSensor #AudiS4Build #StageTwo #E85Swap