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Old 03-04-2013, 09:34 PM   Thread Starter #1
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Default P0420 Pre-Cat Bank 1

Im pretty sure that my bank one precat is out. The mechanic claims that he took it off and saw that it was bad. Could I gut both of them without the CEL staying on, or would I have to do some extra work to make the CEL go away?
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Old 03-04-2013, 09:36 PM   #2
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Default Re: P0420 Pre-Cat Bank 1

It will more then likely throw a code
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Old 03-04-2013, 09:41 PM   Thread Starter #3
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Default Re: P0420 Pre-Cat Bank 1

Originally Posted by 06BlckMax View Post
It will more then likely throw a code
Okay thanks and would it be the same code or different?
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Old 03-04-2013, 09:47 PM   #4
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Default Re: P0420 Pre-Cat Bank 1

Originally Posted by dmerc4 View Post
Okay thanks and would it be the same code or different?
The same cause I have high flows and have the 420 code and gutted cats arent much different
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Old 03-04-2013, 10:01 PM   Thread Starter #5
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Default Re: P0420 Pre-Cat Bank 1

Originally Posted by 06BlckMax View Post
The same cause I have high flows and have the 420 code and gutted cats arent much different
Crap lol then I'll probably do whatever's cheapest and then find some way to get the code bypassed. Do they even sell headers for our cars anymore btw?
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Old 03-04-2013, 10:02 PM   #6
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Default Re: P0420 Pre-Cat Bank 1

Originally Posted by dmerc4 View Post
Crap lol then I'll probably do whatever's cheapest and then find some way to get the code bypassed. Do they even sell headers for our cars anymore btw?
Yeah, cattman
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Old 03-04-2013, 10:10 PM   Thread Starter #7
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Default Re: P0420 Pre-Cat Bank 1

Originally Posted by 06BlckMax View Post
Yeah, cattman
I can't find them anywhere.
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Old 03-04-2013, 10:21 PM   #8
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Default Re: P0420 Pre-Cat Bank 1

Originally Posted by dmerc4 View Post
I can't find them anywhere.
You have to call and put your name on the list

brian catts
520.575.6195
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Old 03-04-2013, 10:40 PM   Thread Starter #9
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Default Re: P0420 Pre-Cat Bank 1

Originally Posted by 06BlckMax View Post
You have to call and put your name on the list

brian catts
520.575.6195
Okay thanks I'll call him and add my name to it tomorrow.
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Old 03-08-2013, 01:23 PM   #10
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Default Re: P0420 Pre-Cat Bank 1

I had to gut all my cats because they are bad and i couldnt afford new ones, but anyways ive had success with the spark plug non foulers, look for that thread, i did exact same thing except i used the factory bungs and i used a 15/32 drill bit instead of half inch. Cost me about 10 bucks and 45 minutes. Ive been 4000 miles and the light hasnt been on since. Also my gas mileage went from 19.6 mpg to 24 mpg once i took care of that and it feels like i have double the power i had with those bad cats. But if you can afford it then i would replace it
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Old 03-08-2013, 01:31 PM   #11
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Default Re: P0420 Pre-Cat Bank 1

Good news
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Old 05-07-2013, 10:14 AM   Thread Starter #12
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Default Re: P0420 Pre-Cat Bank 1

Originally Posted by DANNYVA View Post
I had to gut all my cats because they are bad and i couldnt afford new ones, but anyways ive had success with the spark plug non foulers, look for that thread, i did exact same thing except i used the factory bungs and i used a 15/32 drill bit instead of half inch. Cost me about 10 bucks and 45 minutes. Ive been 4000 miles and the light hasnt been on since. Also my gas mileage went from 19.6 mpg to 24 mpg once i took care of that and it feels like i have double the power i had with those bad cats. But if you can afford it then i would replace it
I'm so sorry, but I just saw this reply. Lol you gutted them and used the defoulers all for $10?
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