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Unread 10-12-2013   #1 (permalink)
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Default Hallow out catalytic converters?

If I hallow out the catalytic converters on my 90 stock H pipe will I get a check engine light from the o2 sensors?
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Unread 10-12-2013   #2 (permalink)
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Why not just buy a used H pipe off of CL. Hollowing out the cats and silencers is a big job.
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Unread 10-12-2013   #3 (permalink)
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Quote:
Originally Posted by Smurf stang View Post
Why not just buy a used H pipe off of CL. Hollowing out the cats and silencers is a big job.
I have looked on cl. Nothing.
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Unread 10-12-2013   #4 (permalink)
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ebay or craigslist or maybe get a custom pipe made for cheap or try and by aftermarket
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Unread 10-12-2013   #5 (permalink)
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Originally Posted by TheStangMan11 View Post
ebay or craigslist or maybe get a custom pipe made for cheap or try and by aftermarket
Still doesn't answer my question...
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Unread 10-12-2013   #6 (permalink)
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Quote:
Originally Posted by Smurf stang View Post
Why not just buy a used H pipe off of CL. Hollowing out the cats and silencers is a big job.
Nah all it takes is a rod and a sledgehammer

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Unread 10-12-2013   #7 (permalink)
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Quote:
Originally Posted by jjaleman97 View Post
Still doesn't answer my question...
Look behind the Cats. Do you see any 02 sensors? The answer to the last question, is the answer to your question.
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Unread 10-12-2013   #8 (permalink)
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Quote:
Originally Posted by jjaleman97 View Post
Still doesn't answer my question...
In short, yes you will throw a code

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Unread 10-13-2013   #9 (permalink)
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In short, yes you will throw a code

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That is incorrect.
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Unread 10-13-2013   #10 (permalink)
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No code will be thrown.

And it take more than just a rod to get all that mesh that is in there out.
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Quote:
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No code will be thrown.

And it take more than just a rod to get all that mesh that is in there out.
Not in my experience. But I'm also talking something that's almost the same diameter as the cat. And a 20 lb sledge. Done it plenty.

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Unread 10-14-2013   #12 (permalink)
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So it will or will not throw a code?
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Unread 10-14-2013   #13 (permalink)
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It will not throw a code.
O/r X pipe are not too expensive and a better option then busting up the cats. Save your cats in case you need to pass inspection down the road.
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Unread 10-14-2013   #14 (permalink)
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Quote:
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So it will or will not throw a code?
They say no. In my experience it always has. And I've done it a lot.

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Unread 10-14-2013   #15 (permalink)
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It will not throw a code in the foxes maybe in the newer style OBDII cars but not ours.
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