Exhaust

I

Ian Christiansen

NAXJA Forum User

Location

Shelby Township, MI

• Nov 11, 2009

• #1

I have a 2001 XJ. In the exhaust, just after the crossmember, but before the muffler, there is some thing that looks like a catalytic converter. There is no 02 near it. Is it a cat or just a resonator? If it is a cat, since there is no 02 sensor near it, can I remove it without it throwing a code?

 

rweaver138

NAXJA Forum User

Location

Brooklyn, CT

• Nov 12, 2009

• #2

before the muffler but after the crossmember. has to be the cat. the ones in the newer jeeps look much bigger and different than the older ones so i can see your confusion. pretty sure you can take it out without any codes my buddy took his out and no codes were thrown.

 

Magus2727

NAXJA Forum User

Location

Draper, UT

• Nov 12, 2009

• #3

the 01' should have a cat with a 02 bung...

you can remove it with out it throwing a code but will make it not street legal.

 

gradon

NAXJA Forum User

Location

DC

• Nov 12, 2009

• #4

I'm working on an 01 that has the federal emissions package. It has 2 o2 sensors--one on each manifold--and none on the cat(that thing looks way different than the earlier years).

 

Johnnie Walker

Piece of Fish!

NAXJA Member

Location

WA state

• Nov 12, 2009

• #5

I believe on the newer ones do not have a O2 after cat. Yes, you can remove your cat. Is it legal? NO. If you have a visual test, then you will fail. I guess you can hollow out your cat and re-install it.

 

I

Ian Christiansen

NAXJA Forum User

Location

Shelby Township, MI

• Nov 12, 2009

• #6

It has has 3 cats. Two in the manifold y-pipe and one where all the other xj's have them. And 4 02 sensors, all in the y-pipe. Michigan doesn't do inspections or emissions testing so I'm not worried about legality. I just want to know if anyone else has been successful removing it.

 

Magus2727

NAXJA Forum User

Location

Draper, UT

• Nov 12, 2009

• #7

It is a federal crime regardless if the state does inspections or emissions....

 

I

Ian Christiansen

NAXJA Forum User

Location

Shelby Township, MI

• Nov 12, 2009

• #8

Thanks?

 

J

jeepman121

NAXJA Forum User

Location

Ohio

• Nov 12, 2009

• #9

XJ's don't have resonators. It's the cat. It can throw codes from time to time, you can drill the sensor into a straight pipe and it will work, but as stated above the fine can be hefty if caught. Ohio doesn't have vehicle inspections so I can get away with it for now.

 

D

dieselenthusiast

NAXJA Forum User

Location

Zuni Mountains, New Mexico

• Nov 24, 2009

• #10

I would highly recommend buying and installing a new 49 state legal aftermarket catalytic converter. It will flow better than stock and still make you legal.