Tag: Duramax upgrade

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lmm s400 Kit: Complete Guide to the High Performance Duramax Turbo Upgrade

lmm s400 Kit: Complete Guide to the High Performance Duramax Turbo Upgrade

The lmm s400 kit takes the 6.6L LMM Duramax to the next level with a large 64mm turbo, fueling upgrades and 800+ hp capability. Learn how this kit unlocks power.