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  1. 6.4L Power Stroke - Technical Info
    I have an 08 F250 6.4 EGR/DPF deleted, head studded, straight piped, tow/haul tuned. I am getting the code U3FFF. I delete the code with my scanner but once I go to start it up again after driving it comes back on. It says manufacturer control U3FFF on my scanner. Any ideas what to do? I know...
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