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what are the best bolt on Power adding options for 2004 4.0?

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  • what are the best bolt on Power adding options for 2004 4.0?

    I have a 04 Tj with 4.0. What are the options for bolt on power. Best bang for the buck. I know a 're gear will add the feeling of more power. My question is are there some options for adding power with bolt on after market stuff? I am new to TJ 's and have never followed them much because in the past I have always had yj's so I am trying to learn. Thanks

  • #2
    Re: what are the best bolt on Power adding options for 2004 4.0?

    The gearing is key to getting it right with wheel size. My glasspack exhaust has worked well for me as well. But it is all custom pieced together. I use an Old trail jammer setup which is problematic while crawling at times but I can't overlook the programming with the the throttlebody. My ECU has been flashed also but that isn't a bolt on. I have an auto with a shift kit also. So many little things. Not sure what works and what doesn't cause I have them all. Plus oil and Tranny coolers help.
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    • #3
      Re: what are the best bolt on Power adding options for 2004 4.0?

      Check this out.



      Jeep 4.0L Myth Busting True Lies - Jp Magazine

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