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  1. Aftermarket Mods.
    * PLEASE READ THE FORUM RULES *** https://www.duramaxforum.com/threads/welcome-to-the-df.29232/ - Moderation Staff
  2. General Discussion
    Hello everyone, after months of having my truck in the shop, I'm looking for anyone with ideas of what to do next. I drive a 2016 Silverado 3500 which I bought in Jan 2020. It had 145k~ miles and now has about 157k. From the beginning my regens were too frequent (150-200 miles between) and lots...
  3. Aftermarket Mods.
    Hello, I have a 2008 LMM deleted and tuned. My EGR isn’t necessarily “deleted” but it is disabled. Will I lower my egts by putting in a aftermarket pipe? Or will a blocker plate do as needed because it is disabled anyway? Should I even worry about taking it out if it’s disabled even though there...
  4. Aftermarket Mods.
    I have a 2016 GMC duramax. I have 65,000 miles on it and it is bone stock. I would like to do some mods...EGR delete, DEF delete and tune. My question is regarding emissions testing. I currently reside in an area where there is no emission testing but am considering moving where there will be...
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