[MTGunner]

2005 Xterra with 4 cats, two on each side, are plugged. What material is inside these catalytic converters? Can they be removed and burned out? Thanks for he help. MTG

 

[dejablue]

If you need to pass inspection then no ,your CEL will be on.

 

[MTGunner]

Do not have emissions testing in Montana...therefore can the cats be removed and somehow burn out the residue or remove altogether? MTG

 

[dejablue]

Yes but the CEL will not turn off if you can live with that . If your going to do that they make a eliminator pipe to replace the cats.

 

[JLBinHSV]

Yes but the CEL will not turn off if you can live with that . If your going to do that they make a eliminator pipe to replace the cats.

Doesn't the ECM use input from the rear O2 sensors to tune the engine? How does no catalyst impact that?

 

[dejablue]

Gutting or taking the cats off line from ECM id going to confuse tuning you may need o2 eliminators also.

 

[MTGunner]

May have to just replace cats. Thanks. MTG

 

[dejablue]

Walker has some nice direct replacement cats.

 

[JLBinHSV]

May have to just replace cats. Thanks. MTG

I'd probably replace the exhaust manifolds while I was at it. I can hear my passenger side exhaust manifold leaking and it's about to drive me batty.