When should you be concerned?Īll turbochargers make some amount of noise – and most people don’t even notice it. 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. In this guide we examine the turbo whistle, a noise made by turbochargers when in operation – you’ll learn what it sounds like, what causes it, and when you need to have it checked out What does turbo whistle sound like?Īs the name suggests, a turbo whistle sounds like a high pitched whistle or whining sound, heard when the turbocharger kicks in as you accelerate and the revs go up.įor some people, a turbo whistle can be annoying, but to others, it’s actually desirable! In fact, some people purchase aftermarket ‘turbo whistler’ devices that fit inside the exhaust of a vehicle to mimic the sound of the turbo whistle.Ī turbo whistle shouldn’t be confused with a police siren or dentist’s drill sound – this is likely to be a sign of something more serious, like compressor wheel damage. At AET, we love the sound a turbocharger makes – but we understand that when your car starts making noises, you want to know exactly what’s happening, and why!
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