Increased power may require transmission upgrades. Contact Fleece Performance to build your transmission or upgrade your clutch.
EFI Live AutoCal loaded with proven Fleece Performance tuning
Perfect for everyone from the weekend warrior to the cross country hauler, this 500hp Duramax power package is sure to give your truck the power you need. It combines a simple to install Air Dog II with proven Fleece Performance tuning loaded on an EFI Live AutoCal.
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