I'll be buying a set of long tube headers soon. Specifically pacesetter. I'm going with the no EGR option, but should I get the 02 extensions? I'll be running a X pipe with no cats or anything, but I still need 02's don't I? I'm not sure what they do for the engine so I don't even know if you need them in the first place. Excuse my need to learn these things lol.
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