Join Date: Jan 2012
Location: Yadkin County, NC
2000 SE Xterra
On 2002 and up year models the headers replace the primary cats, so you will still have the secondary ones. On 2000 and 2001 models there were only primary cats, so you end up with none.
As far as the ones AC sells, they have 2 different ones. They have the doug thorley ones, and they also have another set that have no brand, or are their own brand. The way I understand it is the DT ones are coated, where the AC ones are just stainless. People have had good luck with both, but the DT ones seem to be the more popular choice.
Power wise, I cant vouch for that, but you should notice a difference. Its not going to be world changing. The X is going to be a slow truck no matter what. its the nature of the beast.
Apply dirt liberally, rinse and repeat
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