Whether you’re trying to eliminate turbo flutter to protect your car, or you want to hear the signature sound (potential damage be damned), there are a few things you can do. While turbo flutter puts some stress on your turbo - unless you throw an egregious amount of backpressure at it, the little wear and tear won’t make such a noticeable difference on when you need to replace your turbo. Yes, the manufacturer didn’t design the turbo to handle excessive stress, but they did design the turbo to handle tons of boost, which means it’s pretty durable. So, that means turbo flutter is bad, right? The truth is that it can be, but it usually isn’t. The manufacturer never designed the turbo to handle all this stress, and so it can cause your turbocharger to wear prematurely. Turbo flutter is nothing more than a ton of backpressure flowing through your turbo, and as such, it creates a ton of stress on your turbo. It’s complicated by the fact that there are so many misconceptions about turbo flutter out there. The answer to this question isn’t as straightforward as it might seem. The only difference is that while the wastegate and blow-off valve are supposed to make their sounds, a turbo isn’t. Turbo flutter works the same way the turbo is extremely valuable, but the sound or the “flutter” doesn’t do anything. While both these components perform valuable functions, the sound they create doesn’t do a thing. It’s similar to the sound you hear from a turbo wastegate or a blow-off valve. While it might make some cool sounds, the truth is that it doesn’t do much. Wastegates protect the turbo from producing too much boost, while a BOV protects the turbo from all the pressure that boost creates. a BOV is the location and why it’s redirecting the pressure. So, while both wastegates and blow-off valves redirect excess pressure, the difference between a wastegate vs. They do this by directing exhaust pressure around the turbine inside the turbo once it’s reached the desired amount of boost. Meanwhile, wastegates sit on the exhaust side of the turbo and prevent it from creating too much boost. When a BOV detects an excessive amount of pressure in the intake past the turbo, it opens up and allows that pressure to escape.ĭepending on the type of BOV in question, this pressure is either vented out into the atmosphere or redirected back into your vehicle’s intake. They sit on the intake side of the turbo, and they’re normally closed. Many people confuse blow-off valves and wastegates, and while both these car parts are similar, they perform entirely different functions and for entirely different reasons.Īs we already mentioned, blow-off valves exist to eliminate turbo-flutter. The Role of a Blow-off Valve vs Wastegate In other words, turbo flutter comes into play after the engine does its work. While turbo flutter might make a lot of noise, it actually doesn’t do a thing for performance! That’s because it’s caused by backpressure after you release the throttle. However, if you start tweaking your set-up by using an aftermarket BOV with a stiffer spring, or removing your blow-off valve altogether, turbo flutter can rear its head as the pressure forces its way back through the turbo. Most manufacturers eliminate turbo flutter through a component known as the blow-off valve (BOV). The only available path of least resistance is straight back through the turbo and so this backpressure is what causes turbo flutter. While the engine shuts off airflow, all the pressure from the turbo is still there - looking for somewhere to escape. Turbo flutter, also known as compressor surge, occurs when you step off the accelerator after achieving peak boost. In this comprehensive guide, we’ll dive deep into the world of turbo flutter to break down exactly what turbo flutter is and if you should be worried about it. But once you start paying attention, turbo flutter is everywhere. It creates a unique sound that some motorheads love, while others hate.īut what exactly is it? and more importantly - should you be worried about it? If you’re new to the world of modifying cars and turbocharged engines, turbo flutter might seem like an unheard-of phenomenon. Your adult brain probably loves turbochargers because they’re an efficient source of power - the child in you, however, loves them for the awesome sounds they make.
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