Of these catalytic converters and exhaust kits available at Rockauto, which would you recommend?

[djjcom]

Hi everyone,

Long time lurking and first time posting. I have a 2006 TJ at around 110,000km and I've been getting terrible fuel economy and a bad idle. I replaced my spark plugs and cleaned my throttle body. It didn't fix my issue and soon after I had 2 codes - P0133 and P0153. I replaced my upstream sensors with new NGK sensors. The codes disappeared but I've had the P0133 continue to reappear and disappear since then. I'm still getting terrible fuel economy (about 250km before the fuel light comes on) and the idle is still rough. My plan is to now replace the catalytic converter and exhaust system. Parts are pretty hard to come by in Australia so my only option seems to be ordering from RockAuto.
With what they have available (pictures below), what cat and exhaust would you recommend? I want to make sure to get the best parts as shipping would be about $437 AUD ($265 USD)

Edit: I found this on cat on Ebay for a lot cheaper - https://www.ebay.com.au/itm/3264945...pid=5337789113&customid=&toolid=10001&mkevt=1
Is this just junk not worth getting or should I consider it? It says 3 year warranty and 1 year for international.

 

[TheBoogieman]

Of those choices I'd go with Walker.

 

[djjcom]

Of those choices I'd go with Walker.

I'm thinking of going with Walker for the exhaust but for the cat they are sold separately and are more expensive. The cost difference compared to the Original Performance is about $636 aud ($384 usd). Do you think that cost difference is enough to warrant getting the Walker cat as opposed to the Davico or Original Performance cat? Sorry I don't know anything about these brands.

 

[TheBoogieman]

I'm thinking of going with Walker for the exhaust but for the cat they are sold separately and are more expensive. The cost difference compared to the Original Performance is about $636 aud ($384 usd). Do you think that cost difference is enough to warrant getting the Walker cat as opposed to the Davico or Original Performance cat? Sorry I don't know anything about these brands.

I've only used Walker products, so I wouldn't know if the others are worth saving the money.

 

[Chris]

Walker

 

[jeepguy03]

I've used Walker several times on other Jeeps. The few times I didn't use Walker and chose the other cheaper brands from Rockauto I had issues with the parts fitting together without some hammer time.

 

[oldjeepman]

I have Walker on mine with a Magnaflow muffler..

 

[djjcom]

I have Walker on mine with a Magnaflow muffler..

Did you have to weld the cats together? It's unclear if it can be clamped on or if it needs to be welded.

 

[oldjeepman]

Mine has a clamp between the front cats and the 3rd cat. I didn't install mine, had a muffler shop do the install.

 

[wigsajumper]

Hopefully you are in a Dry place. My last two walker mufflers didn't last more than 2 years. They used to be good for 4-6 depending.

I might have just got a bad batch but it is a bit annoying

 

[squirrelmaster]

I have an early 2000 TJ, so I have the older catalytic converter setup, but I put on the Walker Quietflow SS a few months back and love it. Unlike the Banks Monster I had on it before, the Walker has zero drone and fit perfectly without any massaging. I did modify the turndown at the end, in that I lopped it off with a saw so that it wouldn't stick down below my fuel tank skid plate.

 

[jeepguy03]

Hopefully you are in a Dry place. My last two walker mufflers didn't last more than 2 years. They used to be good for 4-6 depending.

I might have just got a bad batch but it is a bit annoying

The QuietFlow SS is still the longest lasting of all the aftermarket "stock equivalent" mufflers. The only option that will last longer is a full stainless muffler, but usually those are only found in performance applications like Magnaflow or Borla. I had a generic aluminized stock replacement muffler on one of my Cherokees that lasted 1 winter before rusting out.

 

[wigsajumper]

The QuietFlow SS is still the longest lasting of all the aftermarket "stock equivalent" mufflers. The only option that will last longer is a full stainless muffler, but usually those are only found in performance applications like Magnaflow or Borla. I had a generic aluminized stock replacement muffler on one of my Cherokees that lasted 1 winter before rusting out.

Great...I just went with an aluminized one on my wife's GX470 in hopes it would last longer the the 11 months that the walker did. Cant wait until we move. Tired of winter