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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > Technical Discussion and Customizing your H2

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  #1  
Old 09-09-2008, 11:23 PM
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Default F__king hummer cats

Anyone have a better fix for the typical Hummer cat problem other then replacing them with the factory ones?
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Old 09-10-2008, 04:57 AM
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Default Re: F__king hummer cats

There are aftermarket cats available. Check with your local muffler shop.
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Old 09-10-2008, 04:35 PM
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Default Re: F__king hummer cats

I am on my second set of Dyna Tech High flow Cats and its less than 2 years and less than 40,0000 miles. I am now trying to look into cheator Sensors and just punch the cats through. Has anyone Had expierence in Aftermarket or "Cheator Sensors". They are new O2 Sensors.

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B
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Old 09-10-2008, 07:19 PM
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Default Re: F__king hummer cats

I was told by one guy to install a larger cat farther back on the hummer then relocate the O2 sensors that are behind the cats.
He also said the reason why they **** the bed all the time is they are to close to the heads and all that heat so they will just keep failing.
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Old 09-10-2008, 08:53 PM
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Default Re: F__king hummer cats

This is something like I was talking about

http://www.yourhotcar.com/prod/Oxyge...Bypass/545967/

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B
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Old 09-11-2008, 02:54 AM
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Default Re: F__king hummer cats

Their called MIL Eliminators, check at Summit.com

Also, are you running a Tuner or Programmer ??
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