I’m a Subaru certified technician working in a dealership. We also work on VW and BMW. I do anywhere between 80-120 turbo installs and upgrades a year. Through all those jobs I’ve never seen damage done to turbos from surge because turbos are designed to be put under serious load as it is. This is a complete misconception
@@luissalguero697 yes it's true. Compressor surge is NOT bad for your turbo. I personally have owned a 500+ hp car with a blocked bov, and it was like that for years before I owned it, for the entire time I owned it, and still like that 4 years later. It's fine. Look at the Forza skyline also, that thing is stupidly fast, and again, blocked bov. People need to stop spreading that it's bad. The only time when compressor surge is bad for a car, is if you get it while accelerating. That happens when the turbo is providing more air than the engine can physically take, which should only happen if your turbo is stupidly large for your car. Surge when you lift the throttle is fine
I think its important to let people know. That this wont damage the turbo directly BUT it will put more stress on the bearings. So it will wear out faster.
You can do the same thing but in litterally 1 minute, 1. On the recirculation valve find vac pipe coming off the valve, 2. Unplug said vac pipe. 3. Put a bolt or screw into vac hose to seal it, a zip tie will stop vac leak. 4. Done, Enjoy the Tututuutu.. Best thing is you can pop it back on in a second. All this does is stops the valve opening it will stay closed all the time, No blanking plates or removing stuff 😁👌
Sean Mccready not really, if you think that about 8psi of air is gonna completely stop and turn the turbo direction that’s going at thousands of rpm… then you might want to reconsider
Sean Mccready Turbo 'flutter' is caused by off throttle compressor surge. A totally harmless by product of turbine inertia. The compressor is pushing against a closed throttle, During this time the flow drops and the pressure rises. The compressor fluid dynamics dictate that at a certain point the air detaches from the surface of the blades. This non laminar flow means that the compressor no longer compresses, and the air starts to flow back out the intake. This flow continues until the pressure in the intake drops to the point where the flow reattaches to the blades and it starts compressing again. Pressure rises and the cycle goes again. This continues until the inertia of the turbine drops and the shaft slows.
So i see all the comments about how bad it is for your car and i agree but what about the rally cars that you hear making the same noise ? Is that just anti lag or something? Somebody enlighten me
its usually something with the blow off valve, it might not let enough pressure out and then this same problem occurs but blocking it completely is a horrible idea and you loose boost
@@AFXGaming Blocking it is not a horrible idea, and you do not lose boost. When a BOV vents air, it vents it into the non pressure side, between turbo and filter. That excess air comes back through the filter anyway. The thought that it somehow shoots it back into the car and keeps boost ready is a fucking joke. If anything, having it blocked keeps more pressurised air in, for a longer period, as it doesn't simply shoot out of a valve. Educate yourself
bulefire311 not bad for the turbo but u lose boost pressure.bov releases that pressure and reduces compressor surge.its pretty much the compressor wheel slowing down .nowhere to displace the boost
hey man, hate to keep buggin you but do you still have the stock rims off your bugeye Wrx. or do you know anyone that has a set for sale that are decent shape? I'm still running the stock rims on my blobeye like the new ones you got to paint but I like the look of the 02-03 stocks. thanks.
I got a question, is it or is it not bad to run a bov block off plate if you aren't tuned? I've heard they run lean at that point and potentially cause less life out of the motor. Is this true or not? Cause I'm broke and bored lol
Honestly I doubt you'll get anybody to commit wholeheartedly one way, it's always just a matter of opinion. My personal opinion is that it's not that big of a deal because it's only for a split second, it not enough time to do any real damage.
Grab yourself a pod intake and throw it on....you'll hear it for sure. You'll even get a nice noise without a block off plate but it'll flutter loud if you throw a intake on.
@@Herobe15 old comment, but like squishypitbull said, get a pod and a stainless/aluminium intake pipe. If you get someone else to rev your car for you, while your ear is near your stock filter, you should hear the flutter. But having a pod and a metal intake increases the sound considerably.
Bule. Turbo flutter and compressor surge are the same thing under 2 different conditions. Compressor surge is bad. Flutter isnt. 99% of the time your engine is going to need a rebuild before the turbo takes a shit.
Its fine. Cars did it for a long time before they were added. My 06 wrx pushing 350 to the wheels runs better with the BOV blocked off. Im getting it retuned now for non blocked off to see if there's a difference. Whether its ok or not depends on you. If you have a older style turbo its just fine. Certain ones dont like it but i've never seen a turbo fail due to a bov being blocked....but you need to tune for it. Just blocking it is fine but its better to have a tuner go through it if you're gonna be running it blocked off.
Purple280z not everyone has the assets to buy a new car every year or to swap their turbo every year. Just think of the philosophy running a system that is harmful for the turbo's axle. Why? Just why? Most people love the sound, I personally think it's ricer material as it serves zero purpose to either performance or durability. The physics have figured out a long time, so why even bother?
Link'sFaceOfEvil I don't think it's ricer, it was always the standard. When turbo cars first came around they all ran without BOV's. Flutter wasn't seen as something that would destroy a turbo not even to manufacturers. I believe it was the rice scene that actually gave rise to BOV's in order to enhance or change the sound of flutter to something else for scene points and it saving turbo's was the marketing pitch in order to sell them to every idiot but now everyone is running them and less cars flutter. I think the point is, physics would suggest that flutter will give a turbo more stress but in reality it's usually never enough stress to make a difference because by the the time that turbo is ready to shit itself because of flutter you'd have sold the car or the engine would have already died long before. Do you know how fast turbo blades spin? There's not a lot of setups that will produce enough boost to be able to even significantly oppose the spinning blades in a turbo, It's just a pointless debate.
Why would you do this...? I mean I like the flutter sound but it's not something you want to have, usually people fix something when that happens and not purposefully cause it to happen...
This set up is for Subaru intercooler specifically doesn't matter what turbo you have it but you have to have that intercooler setup for this setup to work
The only reason to block the bypass valve is to install a blow off...all your doing is fucking your car up....it actually does hurt not releasing the pressure..recirculating the air keeps you from having to spool back up after you lift off the throttle...why would you want to not only slow your car down on top of messing up your turbo...people who think " it wont hurt it" havent ever pushed serious amounts of boost...please dont do this to your car unless you feel like.buying turbos or having them rebuilt..
@@allthehandlesweretaken No it wont? lol. Imagine your car is running 10psi. 10psi wastegate, 10psi bov. Your wastegate is going to open at 10psi regardless, so you won't make more than 10psi. Your bov will open at 10psi. Then you block it, then it will open at whatever random amount of pressure it takes to physically force it open, which will be above your current boost anyway, and will vent just like it would while plugged in. That isn't a boost leak.
@@VndNvwYvvSvv No you don't, lol. A blocked bov keeps pressurised air in the intake and slowly chops it out. A bov vents anything above your desired psi straight out
I’m a Subaru certified technician working in a dealership. We also work on VW and BMW. I do anywhere between 80-120 turbo installs and upgrades a year. Through all those jobs I’ve never seen damage done to turbos from surge because turbos are designed to be put under serious load as it is. This is a complete misconception
TheAngryDipper might do it to mine then
well explained thank you.
CWL Tempo that's true? Really? Can you explain why please cause if that's true i'm gonna buy one subaru and use no bov
Thanks so much
@@luissalguero697 yes it's true. Compressor surge is NOT bad for your turbo. I personally have owned a 500+ hp car with a blocked bov, and it was like that for years before I owned it, for the entire time I owned it, and still like that 4 years later. It's fine. Look at the Forza skyline also, that thing is stupidly fast, and again, blocked bov. People need to stop spreading that it's bad.
The only time when compressor surge is bad for a car, is if you get it while accelerating. That happens when the turbo is providing more air than the engine can physically take, which should only happen if your turbo is stupidly large for your car. Surge when you lift the throttle is fine
I came here looking for the "it's bad for your turbo" people, but there's practically none. Good video
I think its important to let people know. That this wont damage the turbo directly BUT it will put more stress on the bearings. So it will wear out faster.
You can do the same thing but in litterally 1 minute, 1. On the recirculation valve find vac pipe coming off the valve, 2. Unplug said vac pipe. 3. Put a bolt or screw into vac hose to seal it, a zip tie will stop vac leak. 4. Done, Enjoy the Tututuutu.. Best thing is you can pop it back on in a second. All this does is stops the valve opening it will stay closed all the time, No blanking plates or removing stuff 😁👌
Soooo where's the clip of the noise?
Dynamic Tuning 4:56. Its hard to hear sorry for the audio
Yeah and it only fucks the turbo on your car. It can't release the air pressure. That noise is basically your turbo spooling the wrong way.
Sean Mccready not really, if you think that about 8psi of air is gonna completely stop and turn the turbo direction that’s going at thousands of rpm… then you might want to reconsider
Sean Mccready Turbo 'flutter' is caused by off throttle compressor surge. A totally harmless by product of turbine inertia. The compressor is pushing against a closed throttle, During this time the flow drops and the pressure rises. The compressor fluid dynamics dictate that at a certain point the air detaches from the surface of the blades. This non laminar flow means that the compressor no longer compresses, and the air starts to flow back out the intake. This flow continues until the pressure in the intake drops to the point where the flow reattaches to the blades and it starts compressing again. Pressure rises and the cycle goes again. This continues until the inertia of the turbine drops and the shaft slows.
GFBDev science!
You know they make this wonderful tool called tin snips.
I thought the same thing lol he hacked the shit out of that metal 😆
Can you use rtv for the gasket?
Video of before and after the block off sounds? Great stuff btw
Sorry I don't have the before sound
Thank you. This was one thing that i thought was fun to try
@Brandon Bomoney Hey man, looking to do this, is your car still running alright? lmk!
It is but I only ran it like that for a week or so just to show it. I like the bov better
Maaaaan I wanted to hear your flutter before u blow it.not hear dating tips from duck dynasty
So what did you just block over there? That's the blow-off valve blocked? Or what's that pipe?
I block the air from getting to the bov. That pipe recirculates the air back to the intake
I'm thinking about doing this I've always just been worried about hurting the turbo... Can you still go to full boost while having it blocked off?
So i see all the comments about how bad it is for your car and i agree but what about the rally cars that you hear making the same noise ? Is that just anti lag or something? Somebody enlighten me
its usually something with the blow off valve, it might not let enough pressure out and then this same problem occurs but blocking it completely is a horrible idea and you loose boost
@@AFXGaming Blocking it is not a horrible idea, and you do not lose boost. When a BOV vents air, it vents it into the non pressure side, between turbo and filter. That excess air comes back through the filter anyway. The thought that it somehow shoots it back into the car and keeps boost ready is a fucking joke. If anything, having it blocked keeps more pressurised air in, for a longer period, as it doesn't simply shoot out of a valve. Educate yourself
Any tips for stock Mitsubishi pajero turbo flutter !
Ik I’m a little late but the only option is stainless exhaust and snorkel. Diesel pajero’s do not have a BOV as such
genuine question: would i be able to remove the sheet metal plates whenever i’d like to? or will it weld itself to the bov?
You can take it off whenever
Just take those two bolts off the bov, remove the plate, put the OEM gasket back on, and your set!
how in the world would it weld itself ???
So there is no such bov for flutter bov? You have to make it doesn't sound safe at all
It's perfectly safe. It's no different to changing from stock manifolds to extractors, or getting a muffler delete. It changes sound, nothing else.
Someone had to make the car
bulefire311 not bad for the turbo but u lose boost pressure.bov releases that pressure and reduces compressor surge.its pretty much the compressor wheel slowing down .nowhere to displace the boost
GBody Rob which is BAD for the turbo...
Amen
Last man standing why is letting a turbo spin free with oil pressure is bad for a turbo? Creating turbo flutter will shorten the live off the turbo.
Will this effect my boost guage? 🙏
hey man, hate to keep buggin you but do you still have the stock rims off your bugeye Wrx. or do you know anyone that has a set for sale that are decent shape? I'm still running the stock rims on my blobeye like the new ones you got to paint but I like the look of the 02-03 stocks. thanks.
Yeah thats whats on my car now. After i paint the new ones I have to give mine to Shane. Did you check neosoc on Facebook?
And you will never be bugging me if we are talking about cars or a video.... I love that stuff lol!
I got a question, is it or is it not bad to run a bov block off plate if you aren't tuned? I've heard they run lean at that point and potentially cause less life out of the motor. Is this true or not? Cause I'm broke and bored lol
Honestly I doubt you'll get anybody to commit wholeheartedly one way, it's always just a matter of opinion. My personal opinion is that it's not that big of a deal because it's only for a split second, it not enough time to do any real damage.
It wont run lean.
Installed the plate and everyhting and nothing its weird It doesnt flutter for me?
do you have a intake? The stock airbox wont give you much sound.
Throw a pod intake on and you'll hear it for sure.
and how much boost are you running?
squishypitbull oh yea am stock and highest is 17 psi
Grab yourself a pod intake and throw it on....you'll hear it for sure. You'll even get a nice noise without a block off plate but it'll flutter loud if you throw a intake on.
@@Herobe15 old comment, but like squishypitbull said, get a pod and a stainless/aluminium intake pipe. If you get someone else to rev your car for you, while your ear is near your stock filter, you should hear the flutter. But having a pod and a metal intake increases the sound considerably.
Do shops do this or is this more of a self job only? Sorry, im a little new to the car game...
I doubt any shop would do it this way. This is more of a cheap DIY
What is the gfb bov called?
What about the vacuum line leading into the blow off
brian turner what about it?
Brandon Bomoney do I block it off as well
brian turner no just leave it connected
Brandon Bomoney so I actually bolt the bov back on but with the plates in between
yes
turbo flutter? compressor surge. it'll fuck your turbo
Bule. Turbo flutter and compressor surge are the same thing under 2 different conditions.
Compressor surge is bad.
Flutter isnt. 99% of the time your engine is going to need a rebuild before the turbo takes a shit.
bulefire311 yea its sounds good but idk if that's OK to keep that air pressure blocked .idk
Its fine. Cars did it for a long time before they were added. My 06 wrx pushing 350 to the wheels runs better with the BOV blocked off. Im getting it retuned now for non blocked off to see if there's a difference.
Whether its ok or not depends on you. If you have a older style turbo its just fine. Certain ones dont like it but i've never seen a turbo fail due to a bov being blocked....but you need to tune for it. Just blocking it is fine but its better to have a tuner go through it if you're gonna be running it blocked off.
Purple280z not everyone has the assets to buy a new car every year or to swap their turbo every year. Just think of the philosophy running a system that is harmful for the turbo's axle. Why? Just why? Most people love the sound, I personally think it's ricer material as it serves zero purpose to either performance or durability. The physics have figured out a long time, so why even bother?
Link'sFaceOfEvil I don't think it's ricer, it was always the standard. When turbo cars first came around they all ran without BOV's. Flutter wasn't seen as something that would destroy a turbo not even to manufacturers. I believe it was the rice scene that actually gave rise to BOV's in order to enhance or change the sound of flutter to something else for scene points and it saving turbo's was the marketing pitch in order to sell them to every idiot but now everyone is running them and less cars flutter. I think the point is, physics would suggest that flutter will give a turbo more stress but in reality it's usually never enough stress to make a difference because by the the time that turbo is ready to shit itself because of flutter you'd have sold the car or the engine would have already died long before. Do you know how fast turbo blades spin? There's not a lot of setups that will produce enough boost to be able to even significantly oppose the spinning blades in a turbo, It's just a pointless debate.
Why would you do this...? I mean I like the flutter sound but it's not something you want to have, usually people fix something when that happens and not purposefully cause it to happen...
@Nirmal Kunwar lol what? I've had turbo cars, but would never cause compressor surge purposefully
@Nirmal Kunwar ah lol 😂
There's no harm in doing it
does it work for any turbo??
This set up is for Subaru intercooler specifically doesn't matter what turbo you have it but you have to have that intercooler setup for this setup to work
The only reason to block the bypass valve is to install a blow off...all your doing is fucking your car up....it actually does hurt not releasing the pressure..recirculating the air keeps you from having to spool back up after you lift off the throttle...why would you want to not only slow your car down on top of messing up your turbo...people who think " it wont hurt it" havent ever pushed serious amounts of boost...please dont do this to your car unless you feel like.buying turbos or having them rebuilt..
Will this cause an engine light to come on
TMG Soar No
Ok thank you Brandon Bomoney
You can just unplug the vacuum line or the cable
yeah, i just inplugged the vaccum line and hose from airbox.
Wouldnt recomend it. The boost pressure can open the valve. And that will cause a boost leak.
@@allthehandlesweretaken No it wont? lol. Imagine your car is running 10psi. 10psi wastegate, 10psi bov. Your wastegate is going to open at 10psi regardless, so you won't make more than 10psi. Your bov will open at 10psi. Then you block it, then it will open at whatever random amount of pressure it takes to physically force it open, which will be above your current boost anyway, and will vent just like it would while plugged in. That isn't a boost leak.
Does is lose any hp?
You lose "spool", so essentially yes.
@@VndNvwYvvSvv No you don't, lol. A blocked bov keeps pressurised air in the intake and slowly chops it out. A bov vents anything above your desired psi straight out
Yeah but you can just use a health potion and it regens back
Cant you just take off the recurculating hose and block the into hose gromet thing on the intake?
you would have to block the part coming off the valve as well
You can block between the intake pipe and blow off valve. People do it here with coke cans.
lol any tips for an rx7 fc stock turbo II
do you have a bov? if so just weld it shut. lol.... no don't do that, that would be bad
Brandon Bomoney yea there's a bov lol I would never do that
How to screw up your thrust bearings, turbo and subsequently your engine.
According to who or what?
You have no idea what you're talking about
i bet you also think blinker fluid exists
Does it matter how thick the metal should be?
I wouldn't crazy with something really thick, but no it doesn't matter
Brandon Bomoney alright I'm going to do this on my 03 lol
Brandon Bomoney thanks btw
No problem. let me know what you think about it.
Brandon Bomoney I put the metal plate but no flutter happens?? What did I do wrong?
Not bad for normal compression, not good with ALS, because it will burns a big ass fucking hole on the side of your turbo🤣
👏🏻
Why the hell would anyone purposely want that dumb ass turbo flutter sound, or as I call it, grandpa farts.
Because it sounds nice
bungler..
It’s bad for your turbo
No. Its not. Thats a myth.
lol