Looks like it don't need it. That sucks...MKM Custom sold me an STC upgrade kit for my HPOP but I guess the 2004 doesn't need it. Oh well, another notch in my learning curve. Fun time as I'm making my way down to the heads for my bulletproofing.
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Ford Powerstroke Diesel Forum
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A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more!