2017-2023 GM 6.6L L5D Duramax | Engine Tuning by PPEI
CARB EO PendingGain 145+ HP and increase torque. Maximize efficiency and drastically enhance your truck’s throttle response.Level 1: StockLevel 2: +30 HPLevel 3: +65 HPLevel 4: +120 HPLevel 5: +145 HP
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