2015-2020 Ford - F150, 5.0L, 2.7L/ 3.5L EcoBoost, T409 Stainless Steel, 3 Inch Muffler Bypass *Excludes 2019-2020 F150 Limited 3.5L EcoBoost High Output**Cutting Required for Install* 24% Flow Increase (As Tested on EcoBoost) 9% Flow Increase (As tested on 5L) Mandrel Bent Tubing Durable T409 Construction Audio: 2020 Frod F-150 3.5L with MBRP Exhaust : Your browser does not support the audio element.