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we were able to improve flow by 36-percent for dyno-proven gains of up to 12 lb-ft of torque and 7 horsepower
The interference that is common on these trucks creates false voltage readings in the Accelerator Pedal Position Sensor (APPS) circuit
Pays for itself in reduced brake wear and brake maintenance
Drive Side Manifold
dense ram-air into engine
Fleece Performance FPE-61-10002-P 2004.5-2005 Factory LLY Duramax Cylinder Head (Passenger Side) Fleece Performance 2017-2019 Ford Powerstroke 6.7 we were able to improveIntroducing our Freedom Series cylinder heads for the 6. 6L Duramax! Each cylinder head is manufactured in our state of the art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected, pressure and leak tested, and are equipped with new valve guides, springs, and valve seals. Perfect for the daily driver or towing application, these heads utilize stock valves with a 45 degree angle on
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