aFe Dyno Results: During dyno-testing, aFe's down-pipe produced max gains of: +16 HP and +17 ft./lbs. torque (2015 Mustang I4 2.3L).
Tuning Required: This cat-back kit will require a custom tune to avoid a check engine light, while making proper levels of power and avoiding engine damage.
Down-Pipes Available: Sold separately, aFe also offers a 3" diameter performance down-pipe to complete your aggressive EcoBoost build. Choose either their "Street" - catted system (part#: 48-33017-HC).
This kit may not meet emissions requirements in your area. Please verify before ordering.
Coupes Only: aFe's cat-back exhaust kit will only fit 2015-2020 Mustang EcoBoost Coupes, and will not fit convertibles.