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The solution to maximizing the performance of your 6.4L Powerstroke engine might be to remove the EGR and DPF systems. These changes can have a number of advantages, such as increased fuel economy and longer engine life. OE-quality exhaust products engineered for today's medium-duty and heavy-duty vehicles. You have taken out what 100's of researchers have found this vehicle needs to run optimum and be within the emissions laws. You have now removed all of the emission equipment th