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It was also the first Ford engine to address newly introduced emissions standards. Known for power and not longevity, the 6.4 powerstroke has a mixed reputation for reliability. While some have praised the engine’s durability and power, others have noted common areas where it left more to be desired. Whereas quality performance mufflers cost at least $80, straight pipes can cost as little as $20 plus installation. As you can imagine, it definitely pays to address the factory co