Dude thank you. I have a FBO 18 WRX on E60 and I thought I was hearing compressor surge. But after watching this I know it’s my wastegate. As soon as I let off the gas I get a smooth “whoosh” from my recirculating bpv. Thanks for explaining!
Let me help you with some terminology. You have manual, electric, and pcm controlled. Manual boost control is exactly what you said. Electronic boost control is something like an aem truboost, turbosmart eboost street 40, etc. these typically use a mac valve thats controlled by the boost controler to set boost levels and ramp up. And then you get into pcm/ecu controlled that uses factory solenoids to control wastegate or an added solenoid controlled by the pcm/ecu to controll the wastegate. Great video though, good explanations for the two you did explain.
I remember watching this video when I was trying to learn about tgv/egr deletes and now after having a protune with an ebcs, I hear a flutter sound at high boost pressure this helped me figure out exactly what’s happening with my ewg. 😎 cool vid
My stock IWG sounds like this except quieter and with more of a whistle sound to it. I do have a EBCS, though I have limited knowledge of the mod history on this car. Wonder if mine is actually not working right if it should be quiet with an IWG
Thanks for the vid. I couldn’t figure out what was going on on my Solstice. Is there a reason a waste gate would flutter when accelerating when cold but stop fluttering when warmed up? Mine does that.
My wrx powered beetle has just started doing it and its doesnt come on as hard. I have an internal gate with a manual boost controller and aftermarket ecu..Why would the flap flutter when boost pressure is constant, it should either open the actuator or close it. i am changing my actuator as i think the internal spring maybe the issue. I love the scream of the open gate on boost, not sounding like its leaking pressure.
Why is this a thing with Subaru owners and Subaru owners only? Every wastegate on a Subaru does this and on almost every Nissan etc it's constant open sound. I thought because unequal headers at first but if it's just the gate opening and closing I don't get it?
Hey man I know this video is old but could you explain how they can tune it too not flutter? I'm just not a fan of the sound at all and tbh it makes me really nervous. I have been scouring forums all day looking for a solution and can't seem to find one so I'd be really happy if you could help me out
What is the point in the flutter? And did you actually explain what causes the flutter? You said it was the boost controller but why does the boost controller cause the flutter?
@@joshuabrown9398 This is not what compressor surge even sounds like. They are two very different sounds made for two very different reasons. Compressor surge happens when you let off the throttle & don’t have a BOV so that excess air is forced back through the turbo with closed throttle. This is from the external wastegate mounted after the turbo rapidly opening & closing to regulate boost pressure. This flutter in the video is happening at wide open throttle.
@@hawkeyestiguy I will re watch, however even with a blow off valve you can can get the turbo flutter if you are running high boost and the bov is insufficient
@@joshuabrown9398 It’s not the blow off valve. I don’t care if you believe me or not, but please do more research. EWG flutter is 100 times louder than compressor surge or anything else. Look up other videos with external wastegates. Those cars are loud as hell. This is the same thing except mine flutters. There are other cars tuned to do the same thing. I don’t know what else to tell you, but I promise you it is not at all the same thing.
My 04 wrx just started to flutter I have a external waste gate and I have a exhaust leak near the turbo somewhere I haven’t taken it apart to see what one yet but do you think a bad gasket could cause it to flutter? Because it wasn’t fluttering before this..
Possibly. If it started doing it on its own, then my guess would be a bad gasket or something. Can’t say for sure, but I would keep an eye on it & try to troubleshoot it or start talking to a shop/tuner guys about what could be causing it, Those guys have more experience & typically know more than I do.
Thanks for the video man, so if i choose a manual boost controller, it will not flutter, but if i choose an electronic boost controller, i can choose if it flutters or not?
Correct. As far as I know, it has to be a electronic controller & I believe has to be Cobb or GrimmSpeed or something-not all of them do it. I am definitely not the expert on it though, so I would talk to your tuner.
C P I did not have to ask for it, but I could have asked to have it not flutter. With the Grimmspeed ebcs and Cobb AcessPORT, the flutter is tunable and can be made to not flutter.
@@hawkeyestiguy might be a stupid question but why do only Subarus flutter… when you look it up on the internet I can’t seem to find another car with waste gate flutter then Subarus
It sounds like it only flutters when you're on the throttle I and correct me if I'm wrong I think turbo flutter only happens when you let off of the throttle
You are correct. This is wastegate flutter which is different from turbo flutter. The turbo flutters (also called compressor surge) when you let off the throttle & there is no bypass/blow off valve or the valve is malfunctioning. The compressed air has no where to go, so it goes back out the intake & forces the compressor wheels on the turbo to spin backwards making the flutter sound. This is wastegate flutter. This occurs while on throttle. To prevent over-boosting, the wastegate opens up to regulate boost pressure. The way my gate is set up & tuned, it rapidly opens & closes which causes the flutter. Hope that explains it man. 👍🏼
Yes. If you instal an external waste gate, an EBCS, & have it tuned, you can get flutter. The flutter from the EWG is not related to the type of BPV/BOV that you have. In fact, I have an aftermarket Cobb BPV, but it is configured for full recirc, much like the factory valve.
There isn't much of a difference performance-wise, it's just personal preference. The tuner should be able to tune the EBCS to not flutter if it is made by Cobb or GrimmSpeed.
I’m about to go external waste-gate set up what do you suggest like what to get and how to get it to flutter and all that I have a 2009 WRX basic stuff intake exhaust
@@hawkeyestiguy yup.. i went from straight screamer to flutter wastegate control now... The boost control were tighter and quicker spool...the flutter is byproduct of the wastegate solenoid duty cycle at operation... Quicker turbo spool were the major differences... Although friends will ask why my car sounds like the ewg broken... Mainly because its the trend locally where everyone that use ewg use straight screamer boost control method (boost source straight to ewg port with no solenoid control..just 100% on wastegate spring pressure set) So when i did flutter ewg boost controll method.. its something different and special here... Anyway when target boost reached, the flutter will reduce and becomes straight screamer usually at higher rpm range... Im only running about 18psi peak (15psi average)...
@@hawkeyestiguy i have 3-way mac and two tial wastegates with 1bar springs. if you are driving with spring pressure alone then the wastegate will keep a steady sound and car is making ~1bar of boost. then when you turn on the electronic boost controller then the sound is uneven🤕 how could i get a steady sound even with big boost?
Bo Kiss I’m not sure who told you that, but it is 100% wrong. The EWG & BOV serve two different functions and are not connected at all. The BOV vents excess pressure when off-throttle. The EWG allows exhaust pressure to bypass the turbo while on-throttle to prevent over-boosting. They may have been referring to turbo flutter/compressor surge which will result from blocking off the BOV, but that is different than EWG flutter. 👍🏻
I gotta disagree with this. Flutter from a waste gate means that backpressure is forcibly getting past, overboosting the turbo given it's current load and afr. It sounds like the tuner is just bypassing that and running the car closed loop and not considering the solenoids values so boost peaks early and timing and fuel are what dictate it's boost level given the load value. Kinda like saying if timing, fuel and rpm are at X, then boost will always be Z because the engine is this size, with this flow rate, and this turbo size and spec.
No. Please look up wastegate flutter. Wastegate flutter happens at WOT to prevent over boosting. It is caused by the solenoid rapidly opening & closing & was tuned that way. It is 100% different than anything else. This car was tuned by Jr Barrios at Jr Tuned, arguably one of the top tuners in the country. I’m sorry, but I really don’t know why people don’t know anything about wastegate flutter, but insist is has to to with back pressure, or my favorite, people saying it’s actually the BOV. 🤦🏻♂️ Honestly, constantly explaining this over the past 2+ years is getting really old. So, to recap. The flutter is intentional. It is cause by the solenoid. It is perfectly fine. The car was tuned by someone who knows what they are doing. You can disagree with Jr if you want. I’m sure he’ll disagree with your comment. 🤷🏻♂️ Lol.
@@hawkeyestiguy the flutter is from the ecu preventing a smaller turbo from over boosting. Correct. Flutter from the poppet constantly opening and closing is bad because the face of the valve wears out faster than a tune that doesn't bring the turbo past its efficiency threshold. You're overworking a part that has a specific open and closing rate and anything outside of that wears out faces and vacuum diaphragms that much faster. Have you ever thought that maybe if so many people are disagreeing with you, you might not have the entire picture? I've never heard any car with an open dump or closed dump external wastegate have flutter on throttle on purpose and if they do they know they are overboosting and have to check things off track. I've never heard of your tuner before, but I don't discredit him because he's probably trying to figure things out just like the rest of us. As far as high end performance goes. Flutter is bad for the wastegate period. You probably aren't making a big enough power level to see the detrimental effects yet. This isn't me just bullshitting. This is 9 engines and 13 turbos later.
@@hawkeyestiguy i actually did look him up. I didn't realize he worked with a bunch of subaru based race teams. But on the other side they all swapped to different tuners after they worked with him. I've been into subarus since I was 14. I've owned 3 and made 480hp in my 02 bug eye wrx that was meant for Colorado hillclimb. It's not a common thing for any car that's turbo. Plus all his videos of bigger power subarus don't have a "flutter"tune, and they run a list of high end equipment.
Hmm. It is normal for boost to have a steady taper to it, like your peak boost may be 19PSI & by time you hit redline it will be down to 15PSI, but it should stay pretty steady throughout. There shouldn't be spikes up & down.
@@hawkeyestiguy I run the COBB EBCS (switched from Halmann MBC). I specifically went to an EBCS because I didn't want to have to worry about overboosting when it got cold out. I have flutter and my tuner told me it's because that's apparently how the EBCS works by opening and closing the EWG... You can get a solid EWG sound instead of flutter from the GSpeed? Like the OP above my needle on my defi gauges flutters b/w 20-21psi
@@GoatFaceNation why would you boost go up and down, it flutters because the wastegate is constantly opening and closing to keep the boost at the right amount
I am so tired of the screaming EWG and it actually limits me on doing pulls because it's terribly loud. I'm thinking about having my tuner re-route the dump tube back to the dp to make it quiet and more enjoyable to boost again. Unfortunately, it's not as efficient and I may see some power loss during re tune. Sweet ride bro !
I would think your wastegate is failing or you turned up the boost past what it can handle and that is what is making it flutter. unless its just turbo blade chop we are hearing, id get that fixed before you damage your car
Wesley Wallace My wastegate is definitely not failing & that sound is not turbo flutter(compressor surge) either. There is nothing wrong with it and it is operating as designed. I have a 3 port ebcs which rapidly opens & closes the wastegate to regulate boost pressure. As I have an external wastegate, the flutter is audible. Compressor surge occurs after you let off the throttle and is a completely different sound. If you have any other questions, I’ll answer them the best I can.
Car should be fine. And heads up, flutter when out of throttle is fine too 🤔. Flutter during throttle with no ewg is a nono, otherwise, flutter is flutter, less performance by a tiny tiny margin. Look at the 2018 type ra that subaru and prodrive built during the goodwood festival.
No…. It shouldn’t. Just stop. Turbo cars will flutter after cai installs or air mods. It’s not bad… just get a vent to atmosphere valve so that air can go somewhere
@@hawkeyestiguy Hi good video but a waste gate is there to control boost and response if it flutters like that it’s not working properly have you got no springs installed in it and do you purposely wanted to sound like that
Dude thank you. I have a FBO 18 WRX on E60 and I thought I was hearing compressor surge. But after watching this I know it’s my wastegate. As soon as I let off the gas I get a smooth “whoosh” from my recirculating bpv. Thanks for explaining!
Thank you for this, I got a new turbo and since that happened I get a ton of that noise. Always wondered what it was.
Let me help you with some terminology. You have manual, electric, and pcm controlled. Manual boost control is exactly what you said.
Electronic boost control is something like an aem truboost, turbosmart eboost street 40, etc. these typically use a mac valve thats controlled by the boost controler to set boost levels and ramp up.
And then you get into pcm/ecu controlled that uses factory solenoids to control wastegate or an added solenoid controlled by the pcm/ecu to controll the wastegate.
Great video though, good explanations for the two you did explain.
Perfect explanation! Was wondering why car did that on high boost! Sounds insane
I remember watching this video when I was trying to learn about tgv/egr deletes and now after having a protune with an ebcs, I hear a flutter sound at high boost pressure this helped me figure out exactly what’s happening with my ewg. 😎 cool vid
My turbo frs does the same aswell on the Grimm speed ebc. Anything above my spring pressure in the external wastegate and it does the flutter
My STi flutters now on stock boost solenoid
Compressor surge and wastegate flutter is different sounds, you won’t get wastegate flutter on a factory boost solenoid it just isn’t possible or
Dude I have been looking for a video on this forever. My 2.0T stock turbo makes this noise after a k&n intake install
My stock IWG sounds like this except quieter and with more of a whistle sound to it.
I do have a EBCS, though I have limited knowledge of the mod history on this car. Wonder if mine is actually not working right if it should be quiet with an IWG
Thanks for the vid. I couldn’t figure out what was going on on my Solstice.
Is there a reason a waste gate would flutter when accelerating when cold but stop fluttering when warmed up? Mine does that.
same here buddy! drives me crazy but car drives fine
u deserve way more subscribers
Thanks!
awesome video very clears informations
Quick to the point and well explained great video!
My wrx powered beetle has just started doing it and its doesnt come on as hard. I have an internal gate with a manual boost controller and aftermarket ecu..Why would the flap flutter when boost pressure is constant, it should either open the actuator or close it. i am changing my actuator as i think the internal spring maybe the issue. I love the scream of the open gate on boost, not sounding like its leaking pressure.
bro i cant stand that sound i have the same problem im tryna get rid of it how ?
you'll be changing the timings with the increase in boost so best not to change it without it being mapped properly with an aftermarket ecu
Why is this a thing with Subaru owners and Subaru owners only? Every wastegate on a Subaru does this and on almost every Nissan etc it's constant open sound. I thought because unequal headers at first but if it's just the gate opening and closing I don't get it?
Ik this is a very old video. But I’m ewg with a boost controller and still don’t get the flutter
Hey man I know this video is old but could you explain how they can tune it too not flutter? I'm just not a fan of the sound at all and tbh it makes me really nervous. I have been scouring forums all day looking for a solution and can't seem to find one so I'd be really happy if you could help me out
What is the point in the flutter? And did you actually explain what causes the flutter? You said it was the boost controller but why does the boost controller cause the flutter?
Did the ewg require a tune?
After a tune your waste gate flutters. Is this bad?
Its to do with compressor surge on the intake side not the waste gate.
No, this is not compressor surge at all & it is not on the intake side. It is the Wastegate opening & closing.
@@hawkeyestiguy I just don't understand how the waste gate can make the classic turbo flutter noise.
@@joshuabrown9398 This is not what compressor surge even sounds like. They are two very different sounds made for two very different reasons. Compressor surge happens when you let off the throttle & don’t have a BOV so that excess air is forced back through the turbo with closed throttle. This is from the external wastegate mounted after the turbo rapidly opening & closing to regulate boost pressure. This flutter in the video is happening at wide open throttle.
@@hawkeyestiguy I will re watch, however even with a blow off valve you can can get the turbo flutter if you are running high boost and the bov is insufficient
@@joshuabrown9398 It’s not the blow off valve. I don’t care if you believe me or not, but please do more research. EWG flutter is 100 times louder than compressor surge or anything else. Look up other videos with external wastegates. Those cars are loud as hell. This is the same thing except mine flutters. There are other cars tuned to do the same thing. I don’t know what else to tell you, but I promise you it is not at all the same thing.
My 04 wrx just started to flutter I have a external waste gate and I have a exhaust leak near the turbo somewhere I haven’t taken it apart to see what one yet but do you think a bad gasket could cause it to flutter? Because it wasn’t fluttering before this..
Possibly. If it started doing it on its own, then my guess would be a bad gasket or something. Can’t say for sure, but I would keep an eye on it & try to troubleshoot it or start talking to a shop/tuner guys about what could be causing it, Those guys have more experience & typically know more than I do.
Well explained !! Keep up the good vids mate 👌👌👌
Thanks for the video man, so if i choose a manual boost controller, it will not flutter, but if i choose an electronic boost controller, i can choose if it flutters or not?
Correct. As far as I know, it has to be a electronic controller & I believe has to be Cobb or GrimmSpeed or something-not all of them do it. I am definitely not the expert on it though, so I would talk to your tuner.
My genesis flutters under hard load at 17 psi. Did this after cai install
Was this something you had to ask for from your tuner or did it automatically flutter once he tuned it - without you asking for it?
C P I did not have to ask for it, but I could have asked to have it not flutter. With the Grimmspeed ebcs and Cobb AcessPORT, the flutter is tunable and can be made to not flutter.
HawkeyeSTiGuy mine does not flutter. Just open
@@nile9o Mine flutters in the summer and does not in the winter. It is tuned to have less Psi the colder the intake air temperature gets.
@@hawkeyestiguy might be a stupid question but why do only Subarus flutter… when you look it up on the internet I can’t seem to find another car with waste gate flutter then Subarus
It sounds like it only flutters when you're on the throttle I and correct me if I'm wrong I think turbo flutter only happens when you let off of the throttle
You are correct. This is wastegate flutter which is different from turbo flutter. The turbo flutters (also called compressor surge) when you let off the throttle & there is no bypass/blow off valve or the valve is malfunctioning. The compressed air has no where to go, so it goes back out the intake & forces the compressor wheels on the turbo to spin backwards making the flutter sound.
This is wastegate flutter. This occurs while on throttle. To prevent over-boosting, the wastegate opens up to regulate boost pressure. The way my gate is set up & tuned, it rapidly opens & closes which causes the flutter.
Hope that explains it man. 👍🏼
How make this?
Could you use the stock bypass valve (no bov)... and use an external waste gate and get flutter ???
Yes. If you instal an external waste gate, an EBCS, & have it tuned, you can get flutter. The flutter from the EWG is not related to the type of BPV/BOV that you have. In fact, I have an aftermarket Cobb BPV, but it is configured for full recirc, much like the factory valve.
@@hawkeyestiguy what’s EBCS? I got a 2018 civic 1.5t
Is there any advantages/disadvantages of having a flutter or not having a flutter? i prefer the sound of no flutter am i missing out on anything?
There isn't much of a difference performance-wise, it's just personal preference. The tuner should be able to tune the EBCS to not flutter if it is made by Cobb or GrimmSpeed.
Awesome, thanks!
the flutter means you don't have steady peak boost. you would want no fluttering for peak performance.
@Cory O'shannessy What does a BOV have do with anything? Especially considering these cars don't come with BOV's.
@@Madvillian they so come standard with bovs.... All modern cars do. All internally plumbed though
I’m about to go external waste-gate set up what do you suggest like what to get and how to get it to flutter and all that I have a 2009 WRX basic stuff intake exhaust
Hey brotha I got the same subie! I recommend the grimmspeed V-Band ewg pipe and the tial 38mm ewg one. And the grimmspeed 3 port EBCS
I basically have the same setup as Mortalis.
can you get the tune to not flutter?
I can, yes. Will I? I'm not sure. Enjoying the flutter for now.
HawkeyeSTiGuy I would tune it out you would probably get more boost
Cory O'shannessy yes it does, go do some research or ask a tuner
@@hawkeyestiguy yup.. i went from straight screamer to flutter wastegate control now...
The boost control were tighter and quicker spool...the flutter is byproduct of the wastegate solenoid duty cycle at operation...
Quicker turbo spool were the major differences...
Although friends will ask why my car sounds like the ewg broken...
Mainly because its the trend locally where everyone that use ewg use straight screamer boost control method (boost source straight to ewg port with no solenoid control..just 100% on wastegate spring pressure set)
So when i did flutter ewg boost controll method.. its something different and special here...
Anyway when target boost reached, the flutter will reduce and becomes straight screamer usually at higher rpm range...
Im only running about 18psi peak (15psi average)...
@@hawkeyestiguy i have 3-way mac and two tial wastegates with 1bar springs. if you are driving with spring pressure alone then the wastegate will keep a steady sound and car is making ~1bar of boost. then when you turn on the electronic boost controller then the sound is uneven🤕 how could i get a steady sound even with big boost?
They both sound good to me
Agreed. I like both myself. I'm enjoying the flutter right now, but I may change it up in a few years.
How can you change not to flutter with EBC? thanks a lot
Why have I been told that to get EGW flutter, you have to block off the BOV
Bo Kiss I’m not sure who told you that, but it is 100% wrong. The EWG & BOV serve two different functions and are not connected at all. The BOV vents excess pressure when off-throttle. The EWG allows exhaust pressure to bypass the turbo while on-throttle to prevent over-boosting. They may have been referring to turbo flutter/compressor surge which will result from blocking off the BOV, but that is different than EWG flutter. 👍🏻
so is it good when it happens?
It is designed to do it. It's just venting excess boost pressure around the turbo.
@UCRctXQUlVUzHlknphfvr3kA If the wastegate is set up/tuned to do it like mine is, then yes. If not, then it may be an indication of an issue.
Can I drive the car like that?
I was told for higher horsepower you don't want it to flutter you want it straight open
I don't really understand if a Internal waste gate can flutter or not.
Yes, they can, but since they are internal, you don’t always hear them. It really has to do with how the boost control is tuned.
I gotta disagree with this. Flutter from a waste gate means that backpressure is forcibly getting past, overboosting the turbo given it's current load and afr. It sounds like the tuner is just bypassing that and running the car closed loop and not considering the solenoids values so boost peaks early and timing and fuel are what dictate it's boost level given the load value. Kinda like saying if timing, fuel and rpm are at X, then boost will always be Z because the engine is this size, with this flow rate, and this turbo size and spec.
No. Please look up wastegate flutter. Wastegate flutter happens at WOT to prevent over boosting. It is caused by the solenoid rapidly opening & closing & was tuned that way. It is 100% different than anything else. This car was tuned by Jr Barrios at Jr Tuned, arguably one of the top tuners in the country.
I’m sorry, but I really don’t know why people don’t know anything about wastegate flutter, but insist is has to to with back pressure, or my favorite, people saying it’s actually the BOV. 🤦🏻♂️ Honestly, constantly explaining this over the past 2+ years is getting really old. So, to recap. The flutter is intentional. It is cause by the solenoid. It is perfectly fine. The car was tuned by someone who knows what they are doing. You can disagree with Jr if you want. I’m sure he’ll disagree with your comment. 🤷🏻♂️ Lol.
@@hawkeyestiguy the flutter is from the ecu preventing a smaller turbo from over boosting. Correct. Flutter from the poppet constantly opening and closing is bad because the face of the valve wears out faster than a tune that doesn't bring the turbo past its efficiency threshold. You're overworking a part that has a specific open and closing rate and anything outside of that wears out faces and vacuum diaphragms that much faster. Have you ever thought that maybe if so many people are disagreeing with you, you might not have the entire picture? I've never heard any car with an open dump or closed dump external wastegate have flutter on throttle on purpose and if they do they know they are overboosting and have to check things off track. I've never heard of your tuner before, but I don't discredit him because he's probably trying to figure things out just like the rest of us. As far as high end performance goes. Flutter is bad for the wastegate period. You probably aren't making a big enough power level to see the detrimental effects yet. This isn't me just bullshitting. This is 9 engines and 13 turbos later.
@@Teamflatfoot Are you new to Subaru’s? It’s extremely common & doesn’t cause any issues. Look up Jr Tuned.
@@hawkeyestiguy i actually did look him up. I didn't realize he worked with a bunch of subaru based race teams. But on the other side they all swapped to different tuners after they worked with him. I've been into subarus since I was 14. I've owned 3 and made 480hp in my 02 bug eye wrx that was meant for Colorado hillclimb. It's not a common thing for any car that's turbo. Plus all his videos of bigger power subarus don't have a "flutter"tune, and they run a list of high end equipment.
@@hawkeyestiguy my 2021 accord 2.0t (tuned) does this, it scared me at first but this seems to be the reason and I'm somewhat relieved now lol
What boost controller you have ?
ivanperformance100 GrimmSpeed 3-port EBCS. 👍🏻
HawkeyeSTiGuy
Thanks man
HawkeyeSTiGuy if I have a grimspeed electronic boost controller with catless downpipe will I have this wastegate noise??
So mine is fluttering to but my boost goes up and down between 18-20 psi is that normal?
Hmm. It is normal for boost to have a steady taper to it, like your peak boost may be 19PSI & by time you hit redline it will be down to 15PSI, but it should stay pretty steady throughout. There shouldn't be spikes up & down.
@@hawkeyestiguy I run the COBB EBCS (switched from Halmann MBC). I specifically went to an EBCS because I didn't want to have to worry about overboosting when it got cold out. I have flutter and my tuner told me it's because that's apparently how the EBCS works by opening and closing the EWG... You can get a solid EWG sound instead of flutter from the GSpeed? Like the OP above my needle on my defi gauges flutters b/w 20-21psi
your boost going up and down is the flutter you hear in the wastegate. thats how wastegate flutter works lol
@@GoatFaceNation why would you boost go up and down, it flutters because the wastegate is constantly opening and closing to keep the boost at the right amount
I am so tired of the screaming EWG and it actually limits me on doing pulls because it's terribly loud. I'm thinking about having my tuner re-route the dump tube back to the dp to make it quiet and more enjoyable to boost again. Unfortunately, it's not as efficient and I may see some power loss during re tune. Sweet ride bro !
Bo Fa'aita SAME! I stay out of boost for that exact reason. So obnoxious
Michael Ballard The car would be much more fun to drive that way. I’ll need another tune after as well
Look into running a pit bike exhaust, they make them in 38 and 44mm sizes and thread on easy
I would think your wastegate is failing or you turned up the boost past what it can handle and that is what is making it flutter. unless its just turbo blade chop we are hearing, id get that fixed before you damage your car
Wesley Wallace My wastegate is definitely not failing & that sound is not turbo flutter(compressor surge) either. There is nothing wrong with it and it is operating as designed. I have a 3 port ebcs which rapidly opens & closes the wastegate to regulate boost pressure. As I have an external wastegate, the flutter is audible. Compressor surge occurs after you let off the throttle and is a completely different sound. If you have any other questions, I’ll answer them the best I can.
Car should be fine. And heads up, flutter when out of throttle is fine too 🤔. Flutter during throttle with no ewg is a nono, otherwise, flutter is flutter, less performance by a tiny tiny margin. Look at the 2018 type ra that subaru and prodrive built during the goodwood festival.
Wesley Wallace He literally explained everything in the video lmao. That flutter is caused by the EBC.
Sounds better when fully opened , dont Like the sh!t flutter sound..
Whilst under boost it shouldn't be doing that.. the flutter should be while letting off the throttle
No…. It shouldn’t. Just stop. Turbo cars will flutter after cai installs or air mods. It’s not bad… just get a vent to atmosphere valve so that air can go somewhere
Flutter sounds rubbish
Ok, so then don't do it to your car. I won't harass you if you don't.
@@hawkeyestiguy
Hi good video but a waste gate is there to control boost and response if it flutters like that it’s not working properly have you got no springs installed in it and do you purposely wanted to sound like that