The AMS stainless-steel catted downpipe for 2015+ Ford F-150 3.5L EcoBoost (does not fit Raptor) is a Federal EPA-compliant upgrade aimed at improving exhaust flow and the engine’s breathing. Offered as a direct-fit replacement with catalyst, it’s intended to increase the performance potential of the high-output EcoBoost powerplant while maintaining emissions-compliant operation for supported F-150 models.
AMS Performance 2015+ Ford F-150 3.5L Ecoboost (Excl Raptor) Federal EPA Compliant Catted Downpipe