Understanding Harley Davidson EFI! Fuel Injection Explained - Ep. 1

In this first episode of our EFI Theory series, we break down how electronic fuel injection (EFI) systems actually work on modern Harley-Davidson motorcycles. We cover the basics of sensors, the ECU, fuel injectors, and how your bike calculates air/fuel ratio so you can better understand tuning and performance upgrades. Whether you're new to Harley tuning or just want a deeper understanding of EFI systems, this video lays the foundation. If you have questions about Dynojet Power Vision, Thundermax, Impact ECU, or dyno tuning, drop them in the comments — we’re here to help. 🏁 Tucker Speed – Real Performance Harley Builds Please like, subscribe and drop a comment! Check out website at https://www.tuckerspeed.com for all your performance parts, accessories and apparel. Get 10% off your next order when you use code YOUTUBE at checkout. Huge thank you to Law Tigers for sponsoring this video - Check them out: Law Tigers - America's Motorcycle Accident Attorneys https://lawtigers.com/ 1-800-LAW-TIGERS Join our SMS list to get exclusive discounts, early access to sales, new releases and more: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Join Now⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ - https://tuckerspeed.pscrpt.io/4Bl1e3 Follow us on social media for more! Facebook -   / tuckerspeedllc   Instagram -   / tucker_speed   Twitter -   / tucker_speed   Join Our Email Newsletter - http://eepurl.com/gMfxbP CHAPTERS: 00:00-02:48 - Series Into 02:49-04:57 - History of HD EFI 04:58-16:29 - Fuel System Components & What They Do 16:30-21:39 - Fuel System Questions & Coming Up Next #harleydavidson #tuckerspeed #performanceharley