What causes turbo fluttering sound?
When your turbocharged engine is under load, the engine is consuming air (airflow), and your turbo is creating pressure (boost). That fluttering noise is the sound of a turbo operating in compressor surge, as the compressor ‘chops’ through the air rather than pushing the air into the engine.
What part makes turbo flutter?
When you’re flat out and your turbocharged engine is producing peak boost, you have fast airflow at high pressure traveling through your intake system after the turbo compressor. The fluttering you hear is the air escaping back through the turbo as the compressor wheel fights this motion.
Is turbo flutter bad for your turbo?
When the compressed air has nowhere to go, it causes the turbo rotational speed to rapidly drop, and attempts to push against the wheel. This can cause premature wear on your turbo, however closed throttle flutter on modern turbochargers is unlikely to cause a noticeable drop in turbocharger lifespan.
Is BOV flutter bad?
Unlike actual turbo flutter, this sound isn’t indicative of any kind of harsh or overly heavy use for your engine. If this is the noise that you associate as turbo flutter, then you’re in luck. Blow off release isn’t harmful to your engine or turbocharger in any way.
Can you make any turbo flutter?
Almost every vehicle with a turbo comes with a blow-off valve, and if it’s working properly, you won’t get any significant turbo flutter.
How do I make my BOV flutter?
If you want your BOV to flutter a bit, try increasing the spring preload by turning the adjustment clockwise. It’s perfectly safe to set your BOV up to cause some low-rpm flutter, as long as it vents with a whoosh at high-rpm and boost.
What noise does a bad turbo make?
Loud noises: If your vehicle has a bad turbo, you may hear loud noises that sound like whining or screeching. So if your vehicle is running and you hear a loud whining sound that increases in volume as the problem goes unfixed, this is most likely to do a turbo problem.