OFC Ranger
Well-Known Member
- Thread starter
- #1
Turbocharged cars make two distinct iconic sounds.
Atmospheric Blow Off-Valve; this creates the iconic sound of a single sharp release of pressurized air.
Then we have the "flutter" or as the internet coins it, the "stustustustu" sound. Yea this made me laugh too, never heard it called that, I was like "The what sound?" It actually kind of makes sense I guess. You've heard it in movies and some of you may not have realized what it was, or mistook it for a BoV sound.
This is caused on a turbocharged system without any blow off valve type present. When the unused pressurized air has no exit point, well, it just goes back to whence it came from. Yup - reverse course all the way back out your intake. It is the sound of the returning air being forced back through your turbo and chopping against the blades.
So there are a couple of public thoughts on this;
1. Terrible for your turbo
2. Not terrible for your turbo
3. Minimally terrible for your turbo
Debate ranges from "air battling on your blades bad mmkay" (which does make sense), to "turbos built today are structurally superior to those of the past", to "wont hurt smaller turbos, but bad for big boy turbos".
I have zero clue what is true, not true, half truth, or any other choice on the spectrum.
We can make our turbos flutter by simply removing the BoV and blocking the pipe, or you can take a slice of coke can and slip it between the BoV and the pipe.
Atmospheric Blow Off-Valve; this creates the iconic sound of a single sharp release of pressurized air.
Then we have the "flutter" or as the internet coins it, the "stustustustu" sound. Yea this made me laugh too, never heard it called that, I was like "The what sound?" It actually kind of makes sense I guess. You've heard it in movies and some of you may not have realized what it was, or mistook it for a BoV sound.
This is caused on a turbocharged system without any blow off valve type present. When the unused pressurized air has no exit point, well, it just goes back to whence it came from. Yup - reverse course all the way back out your intake. It is the sound of the returning air being forced back through your turbo and chopping against the blades.
So there are a couple of public thoughts on this;
1. Terrible for your turbo
2. Not terrible for your turbo
3. Minimally terrible for your turbo
Debate ranges from "air battling on your blades bad mmkay" (which does make sense), to "turbos built today are structurally superior to those of the past", to "wont hurt smaller turbos, but bad for big boy turbos".
I have zero clue what is true, not true, half truth, or any other choice on the spectrum.
We can make our turbos flutter by simply removing the BoV and blocking the pipe, or you can take a slice of coke can and slip it between the BoV and the pipe.
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