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Message: <blockquote data-quote="Canuck714" data-source="post: 2112805" data-attributes="member: 6707">I'm still dealing with the Fuel Delivery code error, lean Bank 1 and 2.It is anything but lean, you can literally smell the unburnt fuel when its idling.My next step is to swap the injectors and add a Holley replacement in tank fuel pump that bumps the LPH.My truck says its getting 9mpg when its actually getting 11 hand calculated. Truck runs hard, no issues there, but the codes are annoying the crap out of me...lolWas your engine rebuilt with aftermarket pistons etc?Mine was done with all factory ford parts, so I was hoping that nothing internal was causing the PCM to mis-read info.I was told, bumping up compression via high compression pistons could cause the computer to be off.</blockquote>