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Why Does My Turbo Whistle? [Solved]
Turbo whistle is the sound of the compressor inside the turbocharger speeding up (also known as ‘spooling up’, which is why it kicks in at the boost threshold (when the turbo starts to kick in) as you accelerate up the rev range.4 Nov 2014
Turbo Noises || EXPLAINED
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TURBO NOISE SOUND WHINE WHEN CAR IS COLD | WHAT CAUSES AND HOW TO FIX IT
TURBO
HOW TO MAKE YOUR TURBO WHISTLE MORE?
Did your silencer ring make it louder?