REAL WORLD 26 MPG HWY - F150 Ecoboost Lariat 4X4 6.5 Box SCREW - Engine Break In Stage
Just past the engine break in stage, noticed immediate mpg improvement
Heartthrob Exhaust kit # 4004580 F150 2011 Ecoboost.mp4
Installation and 2nd Dyno test of kit # 4004580 4" cat-back Exhaust kit on the 2011 F150 with the 3.5L EcoBoost engine. This kit will fit 2011-2014. This kit also works on the 2015 with just a few minor changes.