Nnbs cat removal
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I'm getting the low efficiency on bank 2, not sure if its an o2 or a cat going out. I am getting a rattle so I think the cats are headin south. Read something about some bolt in cat delete y pipe. Can't seem to find it on here, but besides dealing with the rear o2 delete, anything else to know about ? What have some of you done to **** can your cats?