Everything You Need To Know About Wastegates!

[@benross8063]

Can’t thank you enough for the time and knowledge you dump into this channel. I’ve only owned my Subie for about a year, but with your videos and guidance it has helped me in my aftermarket purchases and given me the confidence to do almost all of my mods myself. Once again, thank you!

[@Smeedia]

Just glad that the videos have been helping! 😁🙏

[@bradleehill9662]

When it comes to wastegate spring sizing you typically want to put in a size that is 60 percent of your target boost pressure that way when the tuner is adjusting your boost pressure it requires a larger percentage of duty cycle giving him better control. I.e. you don't want to add 5 percent and boost pressure rise 7 psi you want to add 20 percent and get 7 psi. Remember the tuner can double whatever the spring pressure is in the Wastegate.

[@Smeedia]

Thank you for the added info 🙏😁

[@Some1David]

But I am running 17,4psi of boost with standard 5psi spring in oem westgate...

[@_GoGo_]

I found this channel exactly when I needed it! All of the information I’ve been getting from you is going to help me turn my daily driver WRX into the car of my dreams!

[@Smeedia]

Glad to hear my friend 🤝🥳

[@jakelonghorn9852]

Literally just built my motor with forged internals and I can honestly say I couldn’t b happier to see u made this video I’m shooting for 450 wheel whenever I’m done with the build

[@Smeedia]

Eyyyy, how'd the engine build go?! 🙌

[@DAREDEVIL503]

450 with Forged?? You do know you could easily push 700 to 800 safely with forged components and have a Monster 👿 car on ur hands!!!

[@colekardis3723]

Dude I love ur content so much I recently tracked my 2009 WRX. It only has a few mods but your how to build Subaru’s reliable video has given me a clear mod path that I really appreciate!

[@Smeedia]

Sounds like a blast and appreciate the support my friend 🔥😁

[@Justinthegamrr]

Been waiting for this video for while thank you so much 🙌🏼

[@Smeedia]

Anytime! Glad I could get it knocked out 🔥😁

[@Metalmania82]

Thank you! Another helpful video as I go down this Subaru modifying road.

[@Smeedia]

🙏🙏🙏

[@Farrell488]

Recently just picked up a 17 wrx and been watching a ton of your videos. Tons of great info 👌

[@Smeedia]

Eyyyy, congrats on the car and glad the videos are helping 😁😁😁

[@spawnofsatan117]

Great videos for sure. I had an 03 bug eye back in high school almost 20 years ago and just bought an 05 blob eye two weeks ago. I missed it so much haha. Congrats on the car.

[@Krzy_Kart]

The like to un-like ratio is amazing! Great video!

[@Smeedia]

Thank you 🙏😁

[@greeneyeassassin982]

Man thank u for the breakdown!!!! This is my first subie n their is so much learn!!!! Thanks!!!!!

[@Smeedia]

Have an abundance of videos out, glad that it helped and congrats on the car 😁😁😁

[@willgeez]

So informative as always! I could listen to you talk about cars all day haha.

[@Smeedia]

😁😁😁😁

[@5UP3RB4GG13]

My dude... you have so much knowledge lol it's like you should be a college professor teaching us about Subaru technology. Half the time I have NO IDEA what you're talking about but I'm LOVING every bit of it!

[@Smeedia]

Haha well glad I can share the knowledge my friend! 🔥😁

[@nautilusofficial8720]

thanks smeedia for taking my suggestion

[@Smeedia]

🔥😁🔥😁 I got you 🙌🙌🙌

[@Mekelmafmus]

People always said that the internal wastegate is better for my legacy, after watching this video I have a little project on my hands. Looking forward to installing the wastegates on my twin scroll.

[@Smeedia]

Sounds like you've got a fun project ahead 🙏🙌

[@ginobambino9443]

Like watching these info videos after watching the install videos. Comes full circle. Thanks!

[@Smeedia]

Never a bad idea to throw them in to cover how they work or why you'd need one 🔥😁

[@ginobambino9443]

@@Smeedia had a general idea of why and how. This just added info

[@justinnorwood6584]

after having my turbo kit done for almost a month. car was dumping all exhaust out of the dump tube. no boost. loud abnoxious noise, all to find out i forgot to put the firing ring inside the wastegate. lmao glad i watched this video thru and saw you do that during the process or i would still be trying to figure out why this car doesn't run after spending 4900$ on a turbo setup! 😂😂😂

[@lilreaper9706]

External wastgates sound amazing in my opinion.🤘

[@Smeedia]

They sound gnarly 😍🔥

[@TheHustler937]

So I'm going to be running twin GT35s on a 5.3 LS is 44 mm wastegates too big and 50 mm flow off valves mine is going to be a blow through setup and the max boost will probably be somewhere between 15 to 20 lb.

[@3obardThawn3]

Great video like always...

[@sw417]

This vid definitely helped me with my build. Once again Tanner, well done.

[@Smeedia]

Glad the video helped my friend! 🙌🔥

[@projectzangetsu2003]

Awesome video, my dude! I've always wondered about the functionality of wastegates...

[@Smeedia]

Thanks my man! Glad the videos helped and hope your doing well!

[@chrisdeli7547]

18mm diameter gives you 9*9/3,14=254,34 area external 38 diameter 19*19/3,14=1133,54 which is 400% more except that you are spot on.nice job.

[@Smeedia]

What formula did you use? I went off of total circufrance vs area. Guessing πr² 👀 Thank you! 🙏🔥

[@chrisdeli7547]

@@Smeedia thats the formula and this the reason why you need to calculate many factors when you change from internal to external since the gap is huge and the responce time of the external does not allow you to maintain the desired boost level stable cause external have more inertia since it is heavier. nice video again keep on the nice job.

[@davereith54]

When choosing a spring pressure, is it logical to add your desired boost to the exhaust pressure to get desired boost when you're bench checking, otherwise have the exhaust pressure blow your wastegate off the seat prematurely?

[@nauggy3250]

That’s it I’m buying an external wastegate. Which would be quieter a Tial or Turbosmart EWG? 2004 wrx with an ebcs and 16gxt

[@MoFoFoRillDo]

Great video, lots of facts. Thank you

[@Smeedia]

Glad it helped 🙏🙏

[@JB-th4bx]

Dig the artic camo hoodie; is that on your merch store?

[@Smeedia]

That one is not mine 🙏

[@bodiesbybradsfitnessbrad8621]

As long as you’re making videos Tanner I’m subscribed ✊🏻✌️👍🤚🏻

[@Smeedia]

Never stopping 🙌🙏😁

[@francogiorgione3547]

If I don’t want any gains and want a 38mm Tial ewg just purely for sound and to eliminate my thought of boost creep can i do it without getting a 3rd pro tune? Just for sound

[@kgthegreatone943]

Thanks for all the information my dude

[@Smeedia]

Anytime my man! 🙏🙏🙏

[@joeyjr4006]

Thanks man that helped out a lot I'm actually going with an external wastegate setup on my blobeye

[@Smeedia]

Glad that it helped! 🙏

[@raptozex4426]

It's like the more modifications you do, the longer your beard gets. The longer your bear grows, the more you're like a Socrates for the car community. Keep it up Tanner!

[@Smeedia]

🤣🤣🤣 lol its funny when I save you can watch the bears grow back after like 10 uploads 😅

[@ItzWallyMan_100]

All right guys, I have a 2013 automatic 1.4 Cruze stock besides the air filter. I don't want to tune my car because I have 174,000 mi and it is my daily. Can I get a wastegate aftermarket is it worth it or not and what kind.

[@stefanvanbraam9792]

Always a pleasure to watch!!

[@Smeedia]

😁🔥😁🔥

[@diemf50]

Awesome vid as usual! Definitely informative! Thank you

[@Smeedia]

Thank you! 🔥😁🔥😁

[@hassanjibril6245]

Thank you Tanner...latest subscriber!

[@Smeedia]

Appreciate the support 🙏😁

[@jasonverster1780]

1 question I have, do you have to weld the internal waste gate shut in order to use an external? That’s what It looked like in the second picture you showed? Otherwise how else can you do it? Buy a new turbo?

[@Smeedia]

No you don't, they do make a bracket that keeps it shut as well 🙏

[@speedtab215]

Absolute A1 video, very educational...

[@Smeedia]

Thank you 🙏🙏

[@Dsracechannel]

Doesn't the blow off valve do the same thing if you keep 25lbs springs if the turbo went past wouldn't the extra just bleed off when the spring opens up thus eliminating a need for a waste gate?.

[@mattmorrison6958]

A wastegate will lower turbo shaft speed, and controlling boost with a BOV leak will raise shaft speed at the same boost level. Not saying there aren't instances to do it, but not ideal for regular old boost control

[@bmw_for_life8902]

I’m Running at turbo smart wastegate 14psi spring but only making 10psi no boost leaks is normal my tuner is say this isn’t normal but the company I got the turbo kit from is saying it’s normal to make less than what the spring is rated for

[@florencejudip7863]

How about for diesel turbo waste gate bro... How many psi is for daily use..

[@NOTmel272]

Looking for some help, please… I have a stock turbo with the cobb off the shelf tune. What should my waist gate duty cycle be right now? I just read 0.00 for wastegate duty and I feel like I have some inconsistent boost going on.

[@Musashi_XIV]

This helped tremendously! For just good reliability on 2013 sti stock turbo do you think the 44mm Tial-MV-R is a good choice? Mods: TGV delete Secondary air pump delete Cobb intake Invidia catless downpipe Type one racing exhaust. I know you get a lot of repetitive questions I'm getting my car pro tuned at drive auto sports in Everett and was going back watching your videos and came across to late🤣

[@Smeedia]

The 38 would be a better option since you'll be running around 18-20 PSI And your good! 😁🔥

[@paulmarsdensr1095]

Waste Gate knowledge, oh yeahhhhh.

[@Smeedia]

💪💪💪

[@tyren5221]

Loving the new thumbnails

[@Smeedia]

Trying to spice them up a bit 🔥😁

[@xportray]

THE GOAT HAS POSTED! Love ur vids homie! Keep this shit up :)

[@Smeedia]

Thanks my man! Always more to come 🙏😁

[@xportray]

@@Smeedia Just shot you a dm on insta!

[@Smeedia]

I'll swing through them in a bit 🙏😁

[@godsplannn]

So if I were to add an external wastegate, do I have to remove the 3port boost controller since it interferes with it?

[@magyar3898]

Who makes a good up pipe for ewg it seems like all the companies I know discontinued there’s like Grimm speed Cobb Perrin

[@Smeedia]

PLM 👌

[@magyar3898]

@@Smeedia thank you so much I’ve been looking for 2 days

[@SubieDougz]

Love this guy videos

[@Smeedia]

Thank you 🙌😁

[@beofflxne7014]

Nice man . But can you go ewg on stock turbo ?????

[@saltybonks3406]

I need help figuring out how to pick out an upipe because tomies ELH apparently are 3 bolt pattern while most EWG are 2 bolt? not sure what this means

[@Smeedia]

What header are you using or planning to use? 🙏

[@saltybonks3406]

@@Smeedia I wanna go with Tomei extreme for the deep tone

[@Smeedia]

Then you'll need thr plm 3 bolt ewg up pipe 🙏

[@Eqium]

i went for twin 50mm on my 427 LS 98mm Turbo

[@bighitmayfield646]

What mm waste gate should I get with my fp black? My whp goal is 400 to 450. And should I get 8cm or 10cm? I do want top end power for the street.

[@MrChozen0101]

Hey brother. Can you do a video for Maintaining waste gate and turbo. Can re-port wastegate flap?

[@Smeedia]

What do you mean by maintaining?

[@jmt0728]

When you are running an external wastegate on the stock turbo do you need to weld the internal wastegate shut or modify anything with the internal wastegate? I plan on running a catted downpipe btw.

[@Smeedia]

You can qeld it or buy a bracket to keep it shut 💪

[@jmt0728]

@@Smeedia thanks!

[@anthonycastillo6981]

Catless would be better with an EWG

[@lucian7182]

So would you recommend the 38mm ewg for a blouch 1.5 xtr on a 21 sti?

[@scarfacex17]

Can we still do external wastegates even with green speed if you are still on Cobb’s tuning platform?? I need to know because I need that external wastegate life!

[@doughboyeric1484]

So if I have a 44 mm turbo with a 38 psi spring will I have to order more springs or will I be fine

[@Smeedia]

I would change the spring, that is a stiff spring for pretty much all applications. Typically I run .9 Bar (13ish) lb spring

[@dragracingrule]

What wastegate is recommended with a stock vf48.

[@Smeedia]

Ewg? I'd do a 38mm

[@mannyp36]

Hello 👋🏼, I have a 13 WRX and looking forward to ordering the PLM Power Driven Subaru EWG Up Pipe with Turbosmart WG40 Gen V Wastegate kit…I’m currently on stage 2+ 93 with accessport stock turbo etc…is there any other additional parts to installing the ewg before the tune.

[@Smeedia]

You'll need the iWG block off bracket and a boost control 😁

[@mannyp36]

@@Smeedia thank you man I appreciate the response 👌🏼 happy new years

[@Smeedia]

Happy new year Manny!

[@tewiremumatangi2111]

I’m having boost problems after a intercooler pipe popped off after fmic install on a Subaru lgt. I’m only hitting 8 psi now instead of 15 psi. Tested for boost leaks and there was nothing, could this be a waste gate problem?

[@Smeedia]

Could be, are you IWG or EWG?

[@tewiremumatangi2111]

@@Smeedia iwg I believe

[@Smeedia]

I wouldent imagine an intercooler pipe popping off causing that but could be IWG issue, Boost controller or a large vaccumm leak. Are you protuned or OTS?

[@TD5rage]

Quick question, I’m trying to put together a compound turbo and I’m thinking of running an internal wastegate on the smaller turbo but an external wastegate on the larger one, does that sound right or dumb? Great video and full of good knowledge 👍

[@TarenGarond]

4:36 , 52 percent increase in efficiency of what?

[@BLLx91]

So real quick, if i want to go ewg, do i have to remove the internal waste gate by switching the hot side or can i keep both?

[@Smeedia]

You can keep it and just weld the IWG shut or get a bracket to keep it shut

[@BLLx91]

Thanks for the fast reply!

[@Smeedia]

Anytime 🙌

[@aaronchandran1217]

Hold up that lighting though is fire!!

[@Smeedia]

Eyyyy, thank you 🙏😁🔥

[@aaronchandran1217]

@@Smeedia love seeing the upgrade in quality over time. You’re doing awesome brother!

[@Smeedia]

Thank you! As I learn more I try to incorporate it into the videos 😁

[@alexortega714]

Very clear and easy to understand information, best wastegate video I ever seen by far (I seen dozens of them) thanks!

[@Smeedia]

Anytime, glad that it helped! 😁

[@UGAfan12132]

So is it worth getting for a stock turbo set up sounds like yes but just making sure I understood exactly what you are saying

[@Smeedia]

If your tuner and making more power an EWG is a good option for a stock turbo 🙏

[@boostedlyfe4089]

Thank you! Do you mind making a video on boost leaks?

[@Smeedia]

If I get the opportunity to test one of my cars for boost leaks I will 🙏

[@Chiefsheikh]

Hey I just came across this video, I was wondering if I NEED a new wastegate or can I just keeep the stock on the vf52 turbo on my 2011 wrx sedan, I have a ton of modifications including bigger top mount, injectors, fuel pump, catless dp, intake turbo inlet, boost controller, bypass valve etc. and i’m gonna be tuned to make 340 wheel hp soon on the stock turbo. can i keep the stock wastegate?

[@Smeedia]

You can but with a catless downpipe your subject to boost creep I'd suggest a plm up pipe with a tial 38mm ewg 🙏

[@HawsStrong]

When u search for wastegate info and smeedia is the first video to show up

[@Smeedia]

Eyyyyy 🙌😁🔥

[@howdoyoufeel6452]

Getting a SF intake with AP for my 2020 sti. What waste gate should I run ? High or low ?

[@Smeedia]

With OTS Tunes I always suggest lowb

[@Gamer-ade]

Hey. Thanks for the info. If I have a completely stock 21 WRX except for a Big SF intake and Cobb AP: everything else under the hood is stock. I run 93 Octane and a 93 octane/Regular waste gate OTS tune. If the car seems to sputter a little here and there: Should I try the high or low waste gate tune? Is this safe on a stock waste gate? Can I run it indefinitely? Thanks in advance.

[@dominicdireda5347]

Could you use the killer b headers with the 2 wastegates on a WRX with a stock turbo?

[@Smeedia]

Yes you can 🙏🙏🙏

[@willlucas1032]

6:00 just for clarity, RPMs per minute is redundant because RPM stands for revolutions per minute Basically you were saying revolutions per minute per minute

[@Smeedia]

It's a new term I'm working on RPM^2 lol I know, when you get infront of a camera sometimes a few things slip 😅

[@jonathan5508]

Can you explain the different sounds of a ewg? The 2015+ wrx with wastegates sounds like a two tone note but on some STI’s they have a one time note. How do I get the two tone note on a sti with a wastegate? I hear some sti with different size wastegates but some sound different. Is the the tune or the spring rates that affect the sound of it?

[@Smeedia]

Wastegates size, Boost controller, the tune. For the 2915+ they use two wastegates where the STI only uses one. The dump tube also can play a factor 🙏😁

[@Berkey1821]

So do I not need a 3 port boost controller with a ewg. Just trying to get the most out of stock turbo/motor on e85 for now until I build it down the road. (13 sti)

[@Smeedia]

Yes you will 🙏🙏🙏

[@DomAnthony89]

Open Vs Recirc? I don't see much on why one would choose one over the other. Besides maybe with how it sounds.

[@Smeedia]

Main reason is sound, you'll get a little better performance with open vs recirc

[@DomAnthony89]

@@Smeedia Thanks. :)

[@chadsammarco7269]

Can you go internal to external?

[@framesii9496]

How much boost can a stock wrx handle with an intake, should I be running low wastegate? I hit 18-20 on normal wategate

[@Smeedia]

Which WRX?

[@saulosantos4293]

What if I run a stage 2+ tune on 3 inch catless on my subaru but i dont want it to run lean?

[@ZKirk33]

When is a good time to get a EWG? If my subaru is still stock, i would assume I wouldn't have to do it till i get more power flowing, right?

[@Smeedia]

Once you jump to a larger turbo would be the ideal time 🙏

[@NoahPaul52]

I’ve been watching a lot of your videos on how to make the sti 300-500 hp and in one video you said if you put a catless down pipe I would need a EWG to minimize boost creep? Would I be able to use that on a 2018 sti stock turbo?

[@Smeedia]

Yes you could, but no one can really tune for catless anymore

[@datuputi2544]

does putting ewg and up pipe add horsepower?

[@maverick2242]

Sic hoodie bud 🤙 Ohh ohh wastegates 🤙👻

[@Smeedia]

🔥🙏🔥🙏

[@trentenfly2331]

So I can put this on my wrx only had catless dp to the cat back and an intake and I tune it I’de be straight👀?

[@Smeedia]

Yes you can, if your catless is suggest using the Tial Set up 🙏

[@jesuslynch6799]

Do a d series turbo build

[@kelvinescobar3113]

So what if I have the stock turbo what size wastegate should I got with?

[@Smeedia]

I would use a 38mm

[@chrism1106]

Are different downpipes necessary for different wastegates?

[@Smeedia]

Not really, the wastegate goes before the turbo. Only time a downpipe would change is if your routing the wastegate back into the downpipe

[@karlos1212]

Tanner, do I NEED a ewg. Living in the pnw makes me wonder cause of the weather. I currently have a stage 2 2020 sti. I want to add fuel pump injectors stumble kit and a intake should I add ewg to the list ?

[@Smeedia]

Are you going to be using a Catted or catless downpipe? 👀

[@Jbmarkowitz95]

Thanks for the content! I do have one question... Is it possible/is it a good idea to run an EWG without swapping out the intake manifold? I was thinking of running IAG UELH, Up pipe, and EWG on a 93 tune with DP, TMIC, Intake, and fueling upgrades. Open to opinions...

[@Smeedia]

Totally fine to do that with the stock intake manifold 🙏

[@henryantonio7549]

Can you run an EWG with a stock turbo on a 2020 STI or do you only need an EWG with aftermarket turbos

[@Smeedia]

You can use one with a stock turbo 🙏

[@F30__Zay]

Great video as always 💪🏻 Is there any sound difference between the 38mm and 44mm? Either pitch or volume ?

[@Smeedia]

Nothing noticeable IMO my old 44mm was just as loud as my 38mm is. However the pitch is slightly diffrent

[@F30__Zay]

@@Smeedia thanks a lot , I have a shop building my car currently and they got me a 44mm and I was worried it wasn’t going to be as deafening as the 38 is lol . Makes me feel better

[@Itscastlebravo]

@@F30__Zay does your 44mm sound as good as your 38mm ?

[@FaveGamer]

Hey bro I have a 2011 Subaru sti my engine blew up but I don’t know if I should go oem pistons or forged, I’m gonna go for a daily tune and probably won’t push it as much and i have a down pipe with a tomei exhaust what setup do you recommend? I just don’t want to blow up my engine again 😭

[@Smeedia]

Just looking at staying around stock power? 🤔

[@jorgejimenez-is4bi]

Can you run an external waste gate and a bov at the same time?

[@Smeedia]

Yes, two diffrent components 🙏 wastegate deals with exhaust, BIV deals with charged air in the charge pipes

[@jorgejimenez-is4bi]

@@Smeedia thank you man, I really like your videos and how you explain everything so good... You’ve got a new subscriber!

[@Smeedia]

Eyyy appreciate the support 🙏

[@daverettberg966]

I like that camo hoody where'd you get that?

[@Smeedia]

Its a TMG hoodie 😁

[@jackbrady86]

I just bought a 2020 STi and I'm planning on doing a bit of work to it, but nothing crazy, mostly just full exhaust, cold air intake, intercooler, stuff like that. I'm not planning on trying to get crazy power out of it, but should I install an external waste gate is that a waste with the stock turbo?

[@Smeedia]

You can install one with stock turbo but TBH it's not needed if your just doing some basic bolt ons 🙏

[@jackbrady86]

@@Smeedia okay cool. Is getting a new turbo the point where you'd need a new waste gate? I want to increase the power a bit, but I'm more interested in doing suspension work to the car.

[@Smeedia]

Yessir, once you swap turbos is really when you NEED it.

[@jackbrady86]

@@Smeedia nice. Thanks man. Great video by the way.

[@sssnake2332]

18mm WG = circumference of 81𝝅 38mm WG = circumference of 361𝝅 An increase of 446% MATHS ARE FUN

[@Smeedia]

πr^2 🔥

[@Kanadian-Squirrel]

Once you install a external wastegate...what happens to the internal waste gate on the turbo, do yiu remove it or?🙈🙊#dumb question

[@Smeedia]

You can either buy a bracket that keeps it shut or you can weld the IWG shut 😁🙏

[@Kanadian-Squirrel]

🙏thanks man

[@raphaellopez5143]

I already have a Tial 44mm external wastegate and my tuner told me that my wastegate is too big. Can I ask him just to adjust it with springs? Rather than buying another turbo with internal wastegate?

[@Smeedia]

What turbo are you using? 👀

[@raphaellopez5143]

@@Smeedia td04

[@Smeedia]

Personally I'd swap to a 38mm gate

[@royalshinemobiledetailing8170]

I live in Washington also but I can’t find a shop that will look at the turbo I have on my car I did not install it it was already on any suggestion

[@Smeedia]

If you can look at thr compressor housing and there should be a serial number or manufacturer markings near where the coupler connects 🙏

[@christopherbroadhacker6663]

Informative as always and for sure answered my questions for the wastegates. But I have one more for you sensei, what type of turbo inlet hose would you recommend?

[@Smeedia]

Whats the turbo? 😁

[@christopherbroadhacker6663]

@@Smeedia stock turbo. As well as stock location

[@Smeedia]

Perrin 2.4" 🙌

[@christopherbroadhacker6663]

@@Smeedia dope. And for the boost controller all I need to do is drill it in correct? There has been no easy explanation for placement on the boost controller

[@Smeedia]

Most of them will just bolt right up in the stock location