Catalytic Converters
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Rock Crawling
Joined: Dec 2010
Posts: 463
Likes: 119
From: Heartland ‘Murica
Catalytic Converters
Hey guys,
I just received the new 02 sensors for the 03. I got underneath it and started to work on removing the old 02s...which are going to be a pain because they are stuck in there good, not sure they’ve ever been changed...and I noticed how bad the cats look, from the outside at least. The truck has 151K on it and I thought that since I’m going through the ignition system and the 02s, I might go ahead and change out the Cats as well.
Found a set of bolt in two piece cats and Y pipe from EP Supply for under $300 shipped. Does the brand of the cats make any difference? Ive done a bit of looking and all Ive seen are universals, Walker and Magnaflow. I’m not sure what’s being used in the EP Supply set up.
But for that price....
Thanks!
I just received the new 02 sensors for the 03. I got underneath it and started to work on removing the old 02s...which are going to be a pain because they are stuck in there good, not sure they’ve ever been changed...and I noticed how bad the cats look, from the outside at least. The truck has 151K on it and I thought that since I’m going through the ignition system and the 02s, I might go ahead and change out the Cats as well.
Found a set of bolt in two piece cats and Y pipe from EP Supply for under $300 shipped. Does the brand of the cats make any difference? Ive done a bit of looking and all Ive seen are universals, Walker and Magnaflow. I’m not sure what’s being used in the EP Supply set up.
But for that price....
Thanks!
Last edited by Daytoman; Jan 30, 2019 at 12:43 PM.
Thread Starter
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Rock Crawling
Joined: Dec 2010
Posts: 463
Likes: 119
From: Heartland ‘Murica
Thanks. I can find magna flow Y pipes with cats for around $450. But the EP supply are about 285. I’m not really looking to make this thing a hot rod I just want to make sure it’s got good solid new parts and make it a good solid driver. So I guess I’m just asking if there’s any detriment to going with kind of a more generic set up instead of a namebrand like magna flow? I think it would be good practice at this point to replace the cats anyway. Think I’m pretty much committed to that at this point.
Camel Trophy
Joined: Dec 2009
Posts: 3,883
Likes: 951
From: Charlotte
Dude, the outside appearance of the cats has NOTHING to do with their performance.
Be patient trying to remove the O2s. You don't say in this thread why you are replacing the O2s. What codes are present? If there are no O2-related codes why are you changing them?
Be patient trying to remove the O2s. You don't say in this thread why you are replacing the O2s. What codes are present? If there are no O2-related codes why are you changing them?
Thread Starter
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Rock Crawling
Joined: Dec 2010
Posts: 463
Likes: 119
From: Heartland ‘Murica
Ive just replaced the plugs and I’ve got new magnecor 8 mm wires, new coils and intake gasket on the way as well. Going to change the cats regardless because I want to. So I’m referring back to my original question.
and I’ll add....Is there a legit reason why I should not replace cats with 16 years and 151k on them?
Last edited by Daytoman; Jan 30, 2019 at 02:14 PM.
TReK
Joined: Feb 2009
Posts: 2,186
Likes: 200
From: Linden, NJ
If you feel like replacing them all, then its all good and go with Magnaflow and make sure its CARB.
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Rock Crawling
Joined: Dec 2010
Posts: 463
Likes: 119
From: Heartland ‘Murica
Well, hell...I just ordered the MagnaFlows. Ive always been a MagnaFlow guy anyway. I was incorrect. The MagnaFlow cat back exhaust was $450. The Cats and Y pipe were $621.
Out with the old, in with the new.
FWIW, my 04 has 148K on it and is still running original cats....with new O2s on it. Purrs like a kitten.....(for now) LOL! Even still, I got a coolant leak I’m hunting down.
Cant wait to get our 15 Disco Sport sold so I can REALLY start buttoning down the two D2s.
Out with the old, in with the new.
FWIW, my 04 has 148K on it and is still running original cats....with new O2s on it. Purrs like a kitten.....(for now) LOL! Even still, I got a coolant leak I’m hunting down.
Cant wait to get our 15 Disco Sport sold so I can REALLY start buttoning down the two D2s.
Last edited by Daytoman; Jan 30, 2019 at 05:16 PM.
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Rock Crawling
Joined: Dec 2010
Posts: 463
Likes: 119
From: Heartland ‘Murica
You'll want to get one of these as the clamp that comes with the Magnaflow is junk.
https://www.amazon.com/Walker-33976-...39546815&psc=1
https://www.amazon.com/Walker-33976-...39546815&psc=1
Camel Trophy
Joined: Aug 2014
Posts: 4,743
Likes: 985
From: Southwestern Virginia
Start soaking your exhaust manifold bolts with an atf/seafoam mix now. Do it daily till the new setup comes in. Youll probably still break a couple studs, but maybe you'll get lucky. Don't waste your time with PB blaster. It's been proven to have little to no effect