So I have been chasing down and praying my P0430 and P0420 cats efficiency below threshold codes were due to a vacuum leak with unmetered air getting in somewhere after the maf sensor. I put in new spark plugs, cleaned maf, Put in new O2 sensors, upper and lower intake gaskets, throttle body gasket, pcv and new purge valve and I’m still getting codes. So my hopping and praying didn’t work and I’m gonna have an expensive repair I’m gonna install myself.

Question is aftermarket I would get either eastern or walker or should I get ford OE parts vehicle is 2013 Ford Edge 120000