Catalytic Converter Replacement - Anyone done it?
#1
Catalytic Converter Replacement - Anyone done it?
I did a bunch of searches but did not find anything. Has anyone had to replace a Cat? I was quoted $1900 by the dealer and I know most of that is the part but thought there might be alternatives???
Thanks in advance
T
Thanks in advance
T
#2
Well first, these are all bolt on parts, so you can change your self if the car hasn't fused them together yet
List price is about 900 dollars, suncoast is usually around 20% off of that so 780 bux.
For rears: Left is 955.113.023.20 and right is 955.113.024.20 I believe.
For fronts is looks like it is a few pieces:
L 955.113.021.00 for maybe just the cat at $414. R 955.113.021.00 There is another part number where the last 00 changes to 01 and is around 1100 each.
Second, may I ask why you are replacing? Did you damage yourself? If no I would think this would be fixed under the mandatory federal emissions warranty? Assuming you are in the USA.
From: http://www.epa.gov/oms/consumer/warr95fs.txt
What Are Specified Major Emission Control Components?
There are three specified major emission control components,
covered for the first 8 years or 80,000 miles of vehicle use on 1995
and newer vehicles:
* Catalytic converters.
* The electronic emissions control unit or computer (ECU).
* The onboard emissions diagnostic device or computer (OBD).
Catalytic converters are critical emission control components
that have been installed on most cars and trucks manufactured since
1975. Since engines don't burn fuel completely during the combustion
process, the exhaust contains a significant amount of harmful
pollutants such as carbon monoxide, hydrocarbons, and oxides of
nitrogen. The catalytic converter aids the conversion of these
pollutants to less harmful substances such as carbon dioxide, water
vapor, nitrogen, and oxygen before the exhaust is expelled into the
environment.
The electronic emissions control unit or computer monitors
certain powertrain functions and controls various operating parameters
to help the vehicle run efficiently and with the lowest possible
emissions. Ignition, transmission function, air injection, exhaust
gas recirculation (EGR), engine operating temperature and fuel system
parameters are some of the systems monitored and/or controlled by the
electronic emissions control unit.
The onboard emissions diagnostic device monitors the operation of
a vehicle's emission control system and alerts the driver with a
dashboard light when malfunctions occur. The system will record where
the problem is occurring and assist automotive technicians in
diagnosing and repairing emission control malfunctions. Since some
emission control malfunctions do not have an adverse effect on vehicle
performance, they can go undetected by the driver for quite some time.
The onboard diagnostic device will help catch malfunctions early,
preventing a significant output of harmful exhaust emissions from your
vehicle, and possibly in time to be covered by the emissions control
warranty. Often this "device" is part of the electronic control unit
mentioned above.
In the future, there may be other parts or components that
qualify for this coverage. Check your owner's manual or warranty book
for possible additional coverage.
How Long Do the Emissions Warranties Apply to Individual Parts of My
Vehicle?
For 1995 and newer model year vehicles, emission control and
emission related parts are warranted for the first 2 years or 24,000
miles of vehicle use. Specified major emission-control components are
warranted for the first 8 years or 80,000 miles of vehicle use.
List price is about 900 dollars, suncoast is usually around 20% off of that so 780 bux.
For rears: Left is 955.113.023.20 and right is 955.113.024.20 I believe.
For fronts is looks like it is a few pieces:
L 955.113.021.00 for maybe just the cat at $414. R 955.113.021.00 There is another part number where the last 00 changes to 01 and is around 1100 each.
Second, may I ask why you are replacing? Did you damage yourself? If no I would think this would be fixed under the mandatory federal emissions warranty? Assuming you are in the USA.
From: http://www.epa.gov/oms/consumer/warr95fs.txt
What Are Specified Major Emission Control Components?
There are three specified major emission control components,
covered for the first 8 years or 80,000 miles of vehicle use on 1995
and newer vehicles:
* Catalytic converters.
* The electronic emissions control unit or computer (ECU).
* The onboard emissions diagnostic device or computer (OBD).
Catalytic converters are critical emission control components
that have been installed on most cars and trucks manufactured since
1975. Since engines don't burn fuel completely during the combustion
process, the exhaust contains a significant amount of harmful
pollutants such as carbon monoxide, hydrocarbons, and oxides of
nitrogen. The catalytic converter aids the conversion of these
pollutants to less harmful substances such as carbon dioxide, water
vapor, nitrogen, and oxygen before the exhaust is expelled into the
environment.
The electronic emissions control unit or computer monitors
certain powertrain functions and controls various operating parameters
to help the vehicle run efficiently and with the lowest possible
emissions. Ignition, transmission function, air injection, exhaust
gas recirculation (EGR), engine operating temperature and fuel system
parameters are some of the systems monitored and/or controlled by the
electronic emissions control unit.
The onboard emissions diagnostic device monitors the operation of
a vehicle's emission control system and alerts the driver with a
dashboard light when malfunctions occur. The system will record where
the problem is occurring and assist automotive technicians in
diagnosing and repairing emission control malfunctions. Since some
emission control malfunctions do not have an adverse effect on vehicle
performance, they can go undetected by the driver for quite some time.
The onboard diagnostic device will help catch malfunctions early,
preventing a significant output of harmful exhaust emissions from your
vehicle, and possibly in time to be covered by the emissions control
warranty. Often this "device" is part of the electronic control unit
mentioned above.
In the future, there may be other parts or components that
qualify for this coverage. Check your owner's manual or warranty book
for possible additional coverage.
How Long Do the Emissions Warranties Apply to Individual Parts of My
Vehicle?
For 1995 and newer model year vehicles, emission control and
emission related parts are warranted for the first 2 years or 24,000
miles of vehicle use. Specified major emission-control components are
warranted for the first 8 years or 80,000 miles of vehicle use.
#3
Replace the last ones with Fabspeed cat deletes for $580.00.
http://www.fabspeed.com/cayenne.html
You will be happy.
http://www.fabspeed.com/cayenne.html
You will be happy.
The following users liked this post:
Fabspeed Motorsport (06-04-2021)
#4
The only issue might be getting access to the main cats. If there's not a DIY somewhere, then I would suggest taking a look so you can be sure to have all the tools you will need.
Just to replace the secondary cats I had to remove the transmission brace and move the pipes back and forth to get in there. Really I needed a wrench w/ ratcheting capability, which I didn't have. It took friggin forever to remove 6 x 2-3 inch bolts one quarter turn at a time.
Just to replace the secondary cats I had to remove the transmission brace and move the pipes back and forth to get in there. Really I needed a wrench w/ ratcheting capability, which I didn't have. It took friggin forever to remove 6 x 2-3 inch bolts one quarter turn at a time.
#5
I am at 84K miles so the warranty does not apply...bummer. I think the light originally came on before 80K though so maybe the dealer will go to bat for me or Porsche will cover it because it is so close...I'll check.
Thanks!
Thanks!
#7
Hello, I am faced with most likely replacing my catalytic converters on my 08 GTS with 128K miles. I have P0421 and P0431 codes. I already replaced all 4 O2 sensors, but the codes came back. So far, I've replaced thermostat, thermostat housing and updated the coolant lower pipe in the process as well. I've searched and ran out of other options on how to get rid of these codes. Do these codes mean front or rear cats? I'd appreciate any other suggestions or expertise anyone may have on this matter. If you could share some diy instructions on performing this task, thank you.
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#8
Hello, I am faced with most likely replacing my catalytic converters on my 08 GTS with 128K miles. I have P0421 and P0431 codes. I already replaced all 4 O2 sensors, but the codes came back. So far, I've replaced thermostat, thermostat housing and updated the coolant lower pipe in the process as well. I've searched and ran out of other options on how to get rid of these codes. Do these codes mean front or rear cats? I'd appreciate any other suggestions or expertise anyone may have on this matter. If you could share some diy instructions on performing this task, thank you.
#9
If your state has emissions requirements, i'd be very hesitant about going with anything non OEM. Ten hours of labor seems right considering how much needs to be removed to gain access, and then change out the CC's- to go through all that, and than still not have the fault code clear (which I have heard of happening with non-OEM converters) would be a kick in the pants. Even if the aftermarket unit has a warranty, it would most likely only apply to the part, and not labor.
#10
Hello, I am faced with most likely replacing my catalytic converters on my 08 GTS with 128K miles. I have P0421 and P0431 codes. I already replaced all 4 O2 sensors, but the codes came back. So far, I've replaced thermostat, thermostat housing and updated the coolant lower pipe in the process as well. I've searched and ran out of other options on how to get rid of these codes. Do these codes mean front or rear cats? I'd appreciate any other suggestions or expertise anyone may have on this matter. If you could share some diy instructions on performing this task, thank you.
You could use some spacers for you downstream O2 sensors (after cat) to get rid of the code.
Last edited by Rossi; 09-12-2019 at 05:03 PM.
#11
Anyone replaced their primary cats with Hanksville primary cats delete pipes? Just wondering if the use of O2 spacers got rid of the codes.
http://www.hhrproducts.com/porsche-c...ete-downpipes/
http://www.hhrproducts.com/porsche-c...ete-downpipes/
#12
Originally Posted by Rossi
Anyone replaced their primary cats with Hanksville primary cats delete pipes? Just wondering if the use of O2 spacers got rid of the codes.
http://www.hhrproducts.com/porsche-c...ete-downpipes/
http://www.hhrproducts.com/porsche-c...ete-downpipes/
The primary O2 sensors will NOT throw a code since they are before cats.
Secondary sensors are easily coded out by a tuner while they are still connected to pass visual inspection.
#14
Bump
Has anyone thought of using careless downpipe with mini cats on the sensors. Then getting 200cell cats done where secondary cats are right now?
All n all will not be cheapper but turbo spool up time would be awesome and you can still breath at the stoplight.
Has anyone thought of using careless downpipe with mini cats on the sensors. Then getting 200cell cats done where secondary cats are right now?
All n all will not be cheapper but turbo spool up time would be awesome and you can still breath at the stoplight.
#15
Originally Posted by malahhaor
Bump
Has anyone thought of using careless downpipe with mini cats on the sensors. Then getting 200cell cats done where secondary cats are right now?
All n all will not be cheapper but turbo spool up time would be awesome and you can still breath at the stoplight.
Has anyone thought of using careless downpipe with mini cats on the sensors. Then getting 200cell cats done where secondary cats are right now?
All n all will not be cheapper but turbo spool up time would be awesome and you can still breath at the stoplight.
I went with 100 cell IIRC.