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High Flow Cat

  #1  
Old 05-10-2012, 03:46 PM
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Default High Flow Cat

So my car is currently in the shop getting fitted with a nice new exhaust im doing a cat delete I don't have an E test for another 2 years but was thinking in time to get a Highflow cat but wasn't sure which one to go with and will there be check engine lights showing if I do get one I assume there will be when I have the cat missing in the first place is that fixable?

So question is what high flow cat should I get cheap but high/decent quality?
 
  #2  
Old 05-10-2012, 05:33 PM
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I did find a thread on here but it was from 2007 I was wondering if there was any new development on choice and what to use.
 
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Old 05-10-2012, 05:37 PM
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With highflow cats there will be a CEL.

You can get rid of this two ways.

1.) Get a tune which will tune out the CEL for the 02

2.) You can use a spark plug defouler to space the 02 sensor and this will help to remove the code. This can be found below:

Spark Plug Non-Fouler | AutoZone.com
 
  #4  
Old 05-10-2012, 06:35 PM
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From that site it said that there was none for my 06 Monte 5.3 V8
I came across this site that it says these are universal. would they work?

Linkage!
 
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Old 05-10-2012, 07:38 PM
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Magnaflow makes a downpipe/cat for an '06 5.3 that is a bolt in replacement for the OE unit. ZZP also offers a downpipe that uses the same cat and claim it will not void warranty. Both have the bung for the O2 sensor. I was concerned about the CEL when I replaced my downpipe (I bought a Magnaflow) but it's been on the car for almost a year now and no CEL. In fact, I passed emission check last month with flying colors. I wouldn't go with a universal cat...those are usually the ones you'll have a problem with.
 
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Old 05-10-2012, 07:53 PM
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I have a universal Magnaflow no issues but my rear O2 is tuned out
 
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Old 05-10-2012, 08:31 PM
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Originally Posted by 03JGMonte View Post
I have a universal Magnaflow no issues but my rear O2 is tuned out
I like the idea of the fitted magnaflow but I really don't want to drop 250 bucks you have the Universal magnaflow will that still pass emissions?
 
  #8  
Old 05-10-2012, 08:34 PM
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I dont have emissions where im at so really couldnt tell u, id be catless if it didnt sound awefull lol
 
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Old 05-10-2012, 08:39 PM
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I'm going to be catless as of tomorrow I hope is doesn't sound bad. I was looking into this.

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  #10  
Old 05-10-2012, 08:49 PM
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You got a LSX motor so itll sound good without cats my GTO is catless & sounds amazing
 

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