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headers

  1. So many options for Headers but in 2020 you would suggest? 2008 QX56 175,000 Miles

    Performance Mods
    Thanks for reviewing and I appreicate your input in advance. At over 175,000 miles I just got my first cracked manifold a month ago. I have done a lot of readiing on headers in this forum and there is a lot of good information. My 2008 QX56 isn't a daily any longer but its value to me is...
  2. Header/cats recommendations

    Performance Mods
    I am looking to replace the stock headers/cats system on my 08 Armada for something more free flowing. I would like to get a new system with headers and cats so this isnt a delete. Just want something better. Any recommendations? Thanks!
  3. 2009 Armada with 110k no emissions state

    Performance Mods
    I’ve browsed the forums and can’t seem to find a solid answer. What I know now: I can go with JBA, Doug thorley, or stillen headers? which ones are best and preferred as I didn’t see a huge price difference? As of 1/1/20 the state of WA no longer does emissions checks. So don’t need cats. I...
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