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What’s the Secret Behind the Powerstroke Turbo Whistle?

What’s the Secret Behind the Powerstroke Turbo Whistle?

Ever wondered why some 6.0-liter Power strokes have that distinct turbo whistle? It's all about the turbine wheel.Ever wondered why some 6.0-liter Power strokes have that distinct turbo whistle? It's all about the turbine wheel.
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