Originally Posted by suss6052
P-ZEV models have two catalysts, one on the manifold like all 2012+ Ford Foci, and one down stream of this. The majority of 2012+ do not have a second catalyst, but the CA emissions and P-ZEV models do have this. Therefore you would be best advised to go custom and modify only behind the second catalyst.
2012 Racing Red SE
Mods:Factory Splash Guards, Cargo Tray, Weathertech Window Deflector, Gorilla Locks, Removed Emblems, Blacked out grill