'06 Catalytic Converters - Subaru WRX Forum
 
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#1 Old 08-02-2010, 09:23 AM
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'06 Catalytic Converters

I have a 2006 WRX with a catted COBB DP. Does this mean I only have one cat, because the 06 UP is cattless and the COBB DP replaces the cats in the stock DP and MP?? And if I need to replace the cat on the DP, do I need to buy a completely new DP from COBB? Thanks.

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#2 Old 08-02-2010, 09:43 AM
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yes, and mostly yes. You could theoretically cut apart the downpipe and weld on another car but it's not worth the effort IMHO.

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#3 Old 08-02-2010, 10:01 AM
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Damn that's horrible news because I probably need a new cat.

Mike
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#4 Old 08-02-2010, 11:24 AM
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What makes you think you need a new cat?

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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#5 Old 08-02-2010, 12:18 PM
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I've been getting the CEL P0420. Went to the dealership and they seem pretty positive that it's a bad cat. I'm going to have them check the O2 sensors just to be sure, but it's looking like I need to replace the cat on my DP.

Mike
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#6 Old 08-02-2010, 01:08 PM
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That's not unusual with an aftermarket cat. The sensor is completely removable. If that's the only issue, ditch the sensor. If you flashed to stage 2, it would get rid of it for you. In fact, to run that downpipe, you SHOULD have flashed already. What EM do you have? If the answer is "none", that's your problem not your downpipe.

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#7 Old 08-02-2010, 09:13 PM
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Quote:
Originally Posted by mosc View Post
That's not unusual with an aftermarket cat. The sensor is completely removable. If that's the only issue, ditch the sensor. If you flashed to stage 2, it would get rid of it for you. In fact, to run that downpipe, you SHOULD have flashed already. What EM do you have? If the answer is "none", that's your problem not your downpipe.
So I can just get rid of my O2 sensors all together? Would that cause any problems? And how would that be done? I don't know what EM I have. I bought the car the way it is now. But it definitely has a tune cause it runs great.

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#8 Old 08-03-2010, 01:36 AM
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You probably don't have EM and it probably doesn't run as well as you think it does. Get your car tuned and you won't have these problems.

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#9 Old 08-03-2010, 08:46 AM
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How will a tune fix this O2 sensor CEL?

Mike
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#10 Old 08-03-2010, 08:51 AM
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It will disable the code from showing up.

BTW, whoever you took your car to? Don't take it there. They're idiots.

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#11 Old 08-03-2010, 12:26 PM
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So even if I do need a new cat I should just get the code disabled and not worry about it?

Mike
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#12 Old 08-03-2010, 12:33 PM
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I'd say the odds of you actually needing a new CAT are slim. No, the code is not providing any useful information given your setup. The sensor exists purely to verify your emissions system is working correctly as an easy check for inspection shops. They plug in, your sensors say everything's fine, they give you a sticker.

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#13 Old 08-14-2010, 11:53 AM
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hey mfarn

Let me know where you go and how much it was. I'm from mass as well and need decent people to work on my car. Thanks man
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#14 Old 08-14-2010, 03:19 PM
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I ended up getting a tune and that took care of the problem. Didn't need a new cat.

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