Boost Control Explained - Upgrading the EFR (Rebirth E22) 

how do you learn so much about engines and cars in general I would love to tune and work on an engine but where do i start to learn? do you only learn from working on your own car?

I don't get how somebody can put out so much consistently incredible content. I live for these videos, man.

Just bought a 92 miata today with Greg being one of the many influences in me doing so. I love how informative your videos are man. Keep it up dude.

Yessss i love the double uploads, its not too much but its not "not enough" its a perfect medium i love it.

Greg thank you for never ever making a bad video the whole time you have been on RU-vid. Every single video is entertaining and very educational

This has to be the best built Miata on YT. Excited to see it done! You have thought of everything.

Very interesting video again Greg! I love the way you explain everything into detail! Really looking forward to the end result! Good luck with the build!

This is so useful. I'm not trying to get a like or anything but when you are confused about something when it comes to Miata' s, Greg is is the best at explaining and showing how things work and what may happen if you apply any changes to a certain part. He also gives a good demonstration of how to install a part.

Man, this video is amazing man! Im so glad you took the time to show how boost works and the waste gates and the turbo, oh man this is so cool! Thanks man. I just got my new steering wheel and hub today, going to put it on tonight hopefully! Gotta figure out the horn wiring.

I love every single one of your videos mate! Always so clean and full of awesome knowledge and tips. Can't wait to see this motor fire up for the first time! :)

Gregg, great work in this video series! Looking forward to seeing more!

OMG i dont think someone can explain this better. One of your best expaining videos !!!! this was a topic i always wanted to be covered by you. Greetings from Germany

im loving all these uploads dude

This really helped me understand boost control. Thank you!!

What a quality of video and knowledge. Looks like even rookie can do those things. Great channel!

Live for these videos. Only thing I have notifications on for

I never understood boost control... until now, thanks mate. Awesome build and EFR.

I always watch the whole commercial before your videos. Keep up the good work.

So pumped to see this vvt build running!

Finally a car channel that posts frequently! Getting super pumped for this vvt bullshit!

Love the information you give, super easy to understand!

Another Quality Video man👍🏼👍🏼

These videos are super good and informative! A lot of money in this motor!

Best video yet. Thank you been trying to figure this out.

after watching so many videos, I finally understand this, thanks for the video bro, you explained it best

Now I finally understand wastegate actuators and boost control. Thanks Greg!

Dude your videos are insane! Thank you for the content!!!

Greg wtf, how do you not have like 250k subs MINIMUM? You have so many damn good vids on repairs as well as fun stuff.

Awesome educational video. Too bad those who need to watch it the most never will. Active boost control are mandatory to get the the most bang for the bucks out of the parts. And it's also what will make a 1000hp powered veihicle driveable. RU-vid gurus these days lack so much fundamental knowledge, apart from a few like you and handfull others. Keep up the good work. The world has to much fake news already. Damned if it's going to infest the turbo scene too haha.

great vid buddy!

Car passion channel>>>>

Currently trying to get my DIYAutotune EBC to work with my 38mm Tial Wastegate. I was hoping to see exactly this video! Thank you. I have a 1993 mx-6 2.0l 4cyl (FS) running 10.5:1 Compression on pump gas and 7.4psi on a .63ar 60 trim t3. Looking forward to getting the EBC going and running 14psi peak.

Greg the turbo king 🤴🏼thanks for this explanation to us less worthy.

Like always, amazing content!!!

Such good content since last year....

Such good info man.

Such a useful vid, just bought a 440hp NA mx5 that I want to tune down for road use but maintain the ability for track use as well, just wasn't sure how.

Now this was awesome!

Very informational! That is all very good to know!

This is gold!

Hey Greg, two questions: 1: You used your sandwich- plate for sensors and stuff. Does that mean you`re not gonna run an oil-cooler? 2: I hope I get it right, but this is a 1.8 later vvt of the NB miata right? Because that one also has a Oil feed wich you can use for the turbo on the top back of the engine (little inside hex key screw) . Much easier to route to the turbo. Was just wondering. Great videos btw... keep it going!

very nice video man

Yo Gregg. You need to help Taylor Ray with his Miata.

I think that the "open air" connection is only to relief the pressure from the piston, it never connects to the supply. In normal operation no air should flow from the compressor into straight air. That would be a waste. Great video still, I love the series

awesome video

gret vid bro ! helped me alot

Engine goals

I have bought 2 dual port for my Cayenne but the second chamber is leaking through the shaft. It is leaking slow but actually I cannot build pressure with a hand pump - goes to 0.4bar and leaks out pretty quick. Is y{your same way?

Hey Greg, one time you said that you are not working as a mechanic or whatsoever, I don't know if you actually already told your audience but what do you do for a living? Big fan and Nordschleife Miata tuning fellow here, keep up the amazing videos :)

Hey Greg love your videos and I like your editing and style but one thing I've noticed is your outro is starting to look weak in comparison, I know you've got a big project on your hands and you're churning out a lot of awesome content right now but maybe sometime in the future look into updating it.

Hey Greg! Heads up....the 4 port and Megasquirt boost adjustment is far (F A R !!) from linear. More than one guy has ended up at 30+PSIG on pump gas....As boost climbs it gets LESS linear! Just in case you didn't already know.... Love the vids!

you can use a servo motor with a emc and boom no spring needed.

Dudeeeeee so ducking good!!!

Fantastic

Interested In The how to run this with a megasquirt video

Cant wait to see the turnout of this build!

Wow that's amazing

Great video! Love all the information. Are you going to be running your boost vacuum line off the compressor housing or the IC piping? What are your thoughts on running the line pre vs post intercooler?

Are there clearance or thermal issues for not fitting the double port solenoid in the original place? Although the mounting holes are most likely to be in the wrong location, you could cut a piece of rectangle bare (10mm or 1/2" @ most) and drill /tap necessary adapting holes.

I wish I had access to parts, but being a doctor in an EU country, I only earn 1000 a month and can't even do aesthetics like fix my seats :D My car looks cool though. Got a fender that needs replacing and it's in my shed, but I can't afford to paint and mount it. :D What do you think of switching the intake to a left side short intake? My engine overheats sometimes (doesn't go past the line) because I have no heat shield from when I bought it and it was wrapped. I think it was done wrong, so I bought new wrap, but the exhaust manifold is right below the intake cone, so I'm not sure if that's good. I actually took the grill off and it keeps it cool, but at 100 mph, it starts overheating. Yep. It's Europe. Everybody gets to drive 100 mph on the highways. I took it up to 125 mph once and that's pretty much the max the 1.8L goes.

Do you know if the EBC DiyAutoTune sells can handle a dual port actuator?

Greg, great video as always, but could you explain to me the preload? Why and how much is good enough? Cheers from Colombia!

Hi can you please advise me on what size actuator I should get. Ii have the bw efr 8474 twinscroll turbo. I'm hoping to get 800hp so what turbosmart internal twin port actuator will be the best for me to get. It's fwd and will be doing boost per gear l. Thanks in advance.

Perfect

Little confused @7:17 if the boost controller let's pressurized air off into the atmosphere wouldn't that result in a bad boost leak ? I'm probably overseeing something . But great video as usual !

That was outstanding. Completely understandable. Thanks for the crash course. What kind of fail safe is in place of the dual outlet solenoid fails? Does it default to minimum boost?

Will you be showing how to wire the boost control solenoid to megasquirt?

There is always that one guy with the thumb down. Smh. Good content and informational!!!

Why can't i like this twice

Hey Greg, will you be attending the Miatas at Mazda raceway this year?

Hw moch low wil de stiff sprengs go creg?

went cali af with the "ma dudes" next you'll answer your phone with "ahsaa duu!"

I want to shove one of these on a 14b Where can I get one of those single ports?

Hey Greg can you post specs of your build in the description of this video series. I forget what you are running and would help to have a quick reference. I got my build engine running just right, going to drop in the megasquirt this month and boost by year's end. I plan on going BW EFR too, curious what size turbo you went with.

Hey Greg did you consider doing an FE-3/FE-DOHC turbo swap before deciding on the vvt build?

Thanks for the bitchin content. It's a topic I've trying to research. I'm gonna be upgrading to a dual stage boost controller.

Another great video!! Love the details! Question: Is that how the turbo build boost while staging for a launch? 🤔💭🚗💥💨

Explain how the configuration in MS.

Great video ! But one qustion: does the 2 port IWG 75 work good/ with good resolution on a 3 port valve ?

it would be very cool if you ran a variable geometry turbo. Be the first miata youtuber to do so

I have a question. Is there any other difference between single and dual port besides the additional port? Can I buy the single port and drill a hole turning it into a dual port?

What if I purchased the wrong waste gate and instead Of buying a single port I bought the twin port and I only use the top port and connect nothing to the extra port?

Hey Greg, another great video! random question.... What is the white thread locker that you used here (and in your other videos)?

Can u provide the exact part number for the IWG75? I’m looking and there are a bunch of variations. Thanks

When u have a single port EBC the air pressure coming from the turbo isn't escaping to the atmosphere (boost leak), the solenoid is open between the actuator and the open port to let all of the pressure escape from the actuator afaik..

Great video and explanation!! Is there any way/configuration that would let you connect both ports of the twinport wastegate with a 3 port boost controller ??

Can you clock the compressor housing on this borgwarner turbo? My current Garrett turbo compressor housing can only rotate so much (due to the wastegate mounting onto it) I'm trying to get my compressor outlet facing downwards for a cleaner piping setup. And I'm looking to upgrade to a new turbo anyways.

The explanation was more detailed than go fast bret

Yo, if you add to much preload on actuator arm, it means preload to turbo, which means increased spring rate, so if I have too much preload won't it overboost the car?

4lbs psi is just barely making more power than you are losing in backpressure of the turbo set up. so, running 6-8psi is optimum for "low boost" "can feel the boost working".

Most mechanics at your average garage who should know this will never be bothered to even try and learn it. Im the best keyboard mechanic out there 💪🏽

@carpassionchannel can a 4 port solenoid be connected to a 3 port solenoid boost controller? Because I use a greddy profec e boost and I intend of keeping it...

Can the dual port really go from 4psi to 40psi? :o

question.... what's the name of the liquid ptfe?? cheers in advance

How do you not have over a million followers

Sneaks into Gregs garage and throws the motor in the miata lol

Are you running the 4 port currently Or did you stick with the 3 port? I read on another comment that you went back to the 3 port because the 4 port was so hard to tune.

Hey Greg where did you buy your rota's from?

Soooo.... how's the power getting to the ground? BMW trans, CTS V rear.

Is that dualport single or twin scroll?