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Discussion Starter · #1 ·
Starting to get "below efficiency threshold" catalytic converter errors on my 2004 V8.

I've searched and searched for ideas other than OE parts but can't find much.

Help!

Joe
 

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Pretty much stuck with the OEM stuff. Just need to find a dealer that sells the part at a reasonable price. Just got my left Bank 1 CAT for $847.00 (MSRP $1K) @ Burlington VW in NJ

I get most of my parts from
ESC Tuning - esctuning.com
Burlington VW - vwpartsvortex.com
or
Auburn VW - 1stvwparts.com
 

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Discussion Starter · #3 ·
Anyone ever weld a generic to the down pipes?
 

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If you can find 1 that fits between the sensor bungs and flex section go for it. The cat is really small.
 

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Go to a specialist sport exhaust shop, and I ain't talking Midas and Jiffy here. Best places to get sources as to where these guys exist, is to go to your annual Auto Show, and look for exhibitions from exhaust vendors who bring in to show case their modded hot rods, modded 4X4 Jeeps, etc. Take their business card, and off you go. An exhaust shop in my area charged me $600 to replace BOTH primary cats, with Magnaflow hi flow cats. That is an amazing price all considered, it should be no different for you.

OR you can do this ;) :



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Discussion Starter · #7 ·
Good stuff T-Reg-Gray. Danke.
 

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Also, just posted my results using a fuel system cleaner made by BG called 44K. Don't know if you've tried this product but it did clean my DPF's in my V10 to the point the pressures are back withing normal range and no more DPF warnings or fault codes registering...I personally used more than recommended by 2x so don't know if there would have been any difference if I had used the prescribed 1 can....
 

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Discussion Starter · #9 ·
i'm getting lacquer cleaner or the BG stuff tonight and will report back with my results. Years ago, I gutted the cat on my Jetta A1 w/transplanted GTI 1.8 and loved the results. Unfortunately, I can't do that today and it seems it wouldn't make much difference in any case!
 

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Discussion Starter · #11 ·
Ha! Got hit hard with a cold and haven't left the house in a week. :-({|=

Hopefully in a day or two I'll run her out on the Interstate and see how it goes.

Joe (and his maladies)

It's been 6 days, we are waiting on your results!
 

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Discussion Starter · #12 ·
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