High flow cat ?'s which to get

[wmaharrisjr]

Hi I purchased a Magnaflow High flow cat. Which one do i get the one with the O2 holes or with out?

[wmaharrisjr]

comeon someone has to know

[Fishboy55]

I would suggest you get the one with the bung. You can always plug it if it's not used, but it will be easier to have the hole there than have to cut one and thread it.