Needing more performance, MPG's and sound from your 2011 - 2014 3.5L Ecoboost F150? Look no further! All of SPD's catted downpipes use the highest grade catalytic converters and larger 3" diameter mandrel bent tubing which improves throttle response, mileage and overall performance while reducing turbo lag and exhaust temperatures. 
 
On all SPD Performance's aluminized catted downpipes, you get:
Increase in performance
Improved turbo spool time
Better fuel mileage
High flow catalytic converters that do not cause check engine lights
High temp silica ceramic coated for long life span
Factory style flanged clamps on all flared turbo and exit connections
High grade clamps for a solid seal and no leaks
All hardware included

We use EPA approved catalytic converters but you are responsible to verify that they legal with your state and county laws.