For an 05 F-150 4.6L you only need one set of catalytic converters right? And they have to have an 02 port on them? I'm about to redo my whole exhaust with a set of pacesetter longtubes, two magnaflow high flow cats, an x pipe and two dynomax bullet mufflers, am I missing anything? I've heard to reuse the stock gaskets when installing the headers in order to prevent leaks. Any input would be great. Thanks.

 

Gaskets are only good for one fitting unless something changed and I was unaware of it. Now, if you mean by reuse stock gaskets and going to BUY another set of OEM gaskets, that may be the case - I'm not sure how everything fits together with the Pacesetter LTs.

That's gonna be one hell of a loud setup lol.

-rockstate

 

Yes, you only need 2 cats, and yes they have O2 ports. There are 4 O2 sensors, 2 before the cats and 2 after.