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Straight Through Cats Any Good????

Discussion in 'The Garage' started by Alex_B, Feb 22, 2007.

  1. Alex_B

    Alex_B Registered Member

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    Newfoundland, Canada
    I just got a set of full length Pace Setter headers for my 00 GMC 5.3 and before I install them I was wondering if I put a set of straight through Magna Flow cats on will it set off my engine light.

    Thanks:bow:
     
  2. guz71

    guz71 1/2 ton status

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    Your stock cats flow pretty dang good, I dont think you would hear or feel a difference if you swapped those cats. I dont think it would set of your 02 sensors but it would be different with those headers. I gutted my cats in my tahoe and it through the check engine light so I just through on some 02 sensor simulators on the back sensors.
     
  3. Alex_B

    Alex_B Registered Member

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    02 sensor simulators??? Did they work and where can i get them? I've been tryin some way to trip the 02 sensors behind the cats for quite some time.
     
  4. guz71

    guz71 1/2 ton status

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    just get on google and type in 02 simulators and im sure you will find them:wink1: They just send the same signal an o2 sensor would send with normal exhaust, they worked great for me. Some people have to run them with just headers from what i have heard.I had the ones that plug right into connection, pretty easy.
     
  5. rcamacho

    rcamacho 1/2 ton status

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    I've run aftermarket full flow cats before with good results. Noise level increases a bit.
     

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