Dead Catalytic Converter - Possible replacements?
#1
Dead Catalytic Converter - Possible replacements?
Hello,
I just threw a P0430 code and apparently the passenger side Catalytic converter has choked.
Does anyone have any experience buying aftermarket replacements?
I'm looking at Magnaflow and they offer two options. I believe one is CARB legal and one is not.
See here for details:
https://www.carid.com/2008-hummer-h2...B%5D=MagnaFlow
Any input, thoughts?
I just threw a P0430 code and apparently the passenger side Catalytic converter has choked.
Does anyone have any experience buying aftermarket replacements?
I'm looking at Magnaflow and they offer two options. I believe one is CARB legal and one is not.
See here for details:
https://www.carid.com/2008-hummer-h2...B%5D=MagnaFlow
Any input, thoughts?
#2
Quick update. With the dealer wanting $2100 for a factory replacement and after speaking with a Magnaflow rep I went ahead and picked up part # 49679. It's an OEM direct replacement and by design (2 pieces) it should be relatively easy to put in as opposed to wiggling in the large one piece OEM exhaust. $753 shipped. ~$1300 savings.
#3
I think you made the right choice. I think when i cross that bridge- im dropping in headers, pipes and mufflers and skipping the cats. No inspection where i live so nobody will be any wiser. I had an old s10 and we put straight pipes in and it was loud! I bet the h2 would sound great!
Let us know how it all goes together!
Let us know how it all goes together!
#4
I have these:
https://www.afcodynapro.com/DYNATECH/895760119
paired with this:
https://www.afcodynapro.com/DYNATECH/2120267642
No complaints so far
(blackbear remap, and Borla backbox)
https://www.afcodynapro.com/DYNATECH/895760119
paired with this:
https://www.afcodynapro.com/DYNATECH/2120267642
No complaints so far
(blackbear remap, and Borla backbox)
#5
I think you made the right choice. I think when i cross that bridge- im dropping in headers, pipes and mufflers and skipping the cats. No inspection where i live so nobody will be any wiser. I had an old s10 and we put straight pipes in and it was loud! I bet the h2 would sound great!
Let us know how it all goes together!
Let us know how it all goes together!
#6
I have these:
https://www.afcodynapro.com/DYNATECH/895760119
paired with this:
https://www.afcodynapro.com/DYNATECH/2120267642
No complaints so far
(blackbear remap, and Borla backbox)
https://www.afcodynapro.com/DYNATECH/895760119
paired with this:
https://www.afcodynapro.com/DYNATECH/2120267642
No complaints so far
(blackbear remap, and Borla backbox)
I actually saw those cats during my search. Looks like a decent setup. Glad to hear there haven't been any problems. The dealer tried telling me that with anything other than factory parts I was going to have problems. This is only true to a point and the Magnaflow pieces look to be pretty good quality.
#7
Looks like the 2008 and 2005 models have different arrangements, I did the job myself with Magnaflow Semi-Universal CATS but it involved cutting, aligning and welding, quite some effort but it worked.
Anyway here are some of the key points:-
Good luck with the new CATs.
Anyway here are some of the key points:-
- The manifold nuts can be very tricky, it took a high power air tool, lots of penetrating oil and patience.
- Take the opportunity to change the lambda sensors at the same time, buy a good extractor tool and tap to clean up the threads.
- Be sure to break-in the CATs, dont just drive-off. Read this procedure which is worth doing at least twice allowing the endgine to completely cool down in between. Here is
Good luck with the new CATs.
Last edited by oceanbrave; 05-03-2017 at 01:41 PM.
#8
Looks like the 2008 and 2005 models have different arrangements, I did the job myself with Magnaflow Semi-Universal CATS but it involved cutting, aligning and welding, quite some effort but it worked.
Anyway here are some of the key points:-
Good luck with the new CATs.
Anyway here are some of the key points:-
- The manifold nuts can be very tricky, it took a high power air tool, lots of penetrating oil and patience.
- Take the opportunity to change the lambda sensors at the same time, buy a good extractor tool and tap to clean up the threads.
- Be sure to break-in the CATs, dont just drive-off. Read this procedure which is worth doing at least twice allowing the endgine to completely cool down in between. Here is a video which is well worth watching.
Good luck with the new CATs.
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