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  1. Gen1 Diesel Technical Discussion
    In observing the many threads about the P21DD code, DEF heater failures, and DEF reservoir replacements, there seems to be a ton of misinformation floating around. Since I just replaced mine, I thought I'd start this thread to clear things up. I may add a how-to on the procedure later if I...
  2. General Discussion
    Looking for an answer, nothing definitive has come yet... If I buy a downpipe to gain the spooling noise, will I need a midpipe aswell? or am I okay with just the downpipe? Ill only want midpipe if the noise is night and day difference. Again; not looking for gains, not looking for cat back...
  3. Gen1 Diesel General Discussion
    So, I have been puzzling over this for some time and I finally figured it out. The fuel filter life in the DIC is set to 1000 Gallons of fuel used. Here are a couple pics you can use to validate my math.
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