How to pick the right catalytic converter - Pontiac G6 Forum
 
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post #1 of 5 (permalink) Old 04-26-2017, 05:44 PM Thread Starter
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How to pick the right catalytic converter

I have a 2008 3.5L G6 GT Coupe (2 doors, big factory spoiler)

I think I need a new catalytic converter but there's a ton of different types! Left, right, direct and Manifold integrated!! Most websites say to make sure you know the pipe diameter also! HELP!!!!!
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post #2 of 5 (permalink) Old 04-27-2017, 09:02 AM
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With the 3.5L V6 you're going to have 2 front and 1 rear catalytic converters.
Item 1 is the Front Right. Item 2 is the Front Left.


In that pic #2 hooks into #1 on that open port(with gasket #5 sealing them)

So if it is a front cat, you'll be looking for the terms Front Right or Front Left.
There is only 1 rear cat for your car.

And you do not have a manifold integrated...that is the 4 cylinder car.

If you search on Rockauto.com for the parts you'll see pictures of them and be able to compare those to what you see on your car.
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post #3 of 5 (permalink) Old 04-28-2017, 07:58 PM Thread Starter
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OMG!!! 3!!!! How do you figure out where the blockage is?? So many possibilities!! Does each catalytic converter have It's own code? It might not even be a catalytic converter issue!

So the "back pressure test" should be the initial test. What comes next in finding a solution? The garages in my area seem kinda clueless to fixing this issue without the car throwing a specific code.
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post #4 of 5 (permalink) Old 04-28-2017, 08:31 PM Thread Starter
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Quote:
Originally Posted by killjoydod View Post
OMG!!! 3!!!! How do you figure out where the blockage is?? So many possibilities!! Does each catalytic converter have It's own code? It might not even be a catalytic converter issue!

So the "back pressure test" should be the initial test. What comes next in finding a solution? The garages in my area seem kinda clueless to fixing this issue without the car throwing a specific code.
Never mind!! I'm going to start a new thread. This is getting a bit off-topic.
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post #5 of 5 (permalink) Old 05-08-2017, 07:53 AM
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LMK what you find. Im in the same boat.

MODS:
Crab Intakes CAB, MPD Ram Air hood, Custom exhaust,
WAMS High Performance Tune and a whole lot more....

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