In this video, we highlight the step-by-step procedures for installing a FASS Fuel System on the L5P Duramax. By removing the water, air, and debris from your diesel fuel, the FASS protects the injection components and engine while improving performance and efficiency. Additionally, the DRASTICALLY improved fuel flow from the FASS supports all levels of performance modifications–from mild to wild! And as you might suspect, the installation procedures for L5P-equipped GMC Sierras are the same as
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