One of the biggest points of restriction in your 2021 F150's 2.7L EcoBoost is its exhaust system, and you can give your awesome truck a great, new sound and extra power by adding a few exhaust upgrades to your 2.7L EcoBoost build. Cat-backs, resonator deletes, and muffler upgrades can all add a mean sound to your truck. Aftermarket downpipes provide your truck with big-time horsepower and torque gains with a set of downpipes and a good custom tune.