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  1. 6.4L Problems Forum
    Ok, pretty sure my dpf was getting clogged. Usually remove after yearly smog and run dpf delete tune. I recently got a motorcycle so very limited driving, thought I would leave it in until after smog next year. So, I clear the egt temp errors right away and thought it should start. No joy...
  2. 6.4L Performance Parts Discussion
    My question is about the exhaust back pressure with the stock truck setting. I checked a listing of a tuner which said that this tunes was stock. The minimum back pressure was set at zero and the start DPF regen was set at 1 volt. If this was the case then a delete filter would not cause a...
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