DiBiase

I can't find any direct fit catalytic converters for my 11 f150. Is this because they are welded on and require a universal fit? Any suggestions on a specific cat or full exhaust systems? Thanks in advance.

techrep

iTrader: (1)

2011 cats are under warranty....are you looking for hi-flow replacement cats ???

DiBiase

Yes. Wheels and tires are next on the list, but after that will be intake/exhaust. Just trying to do some research now before I get there.

alpo

High-flow cats are still restrictive. If you're after maximum power (and don't have inspections) ditch the cats. Otherwise go with a known brand.

Everybody and their brother offers "high-flow" cats. Decide what you want to do, like how much pipe diameter, what do you want to spend, what are you trying to accomplish?