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tunermt
04-06-2022, 07:10 AM
What’s everyone’s personal preference for wastegates (Internal wastegate or external wastegate (https://ffrides.com/boost-control-and-wastegates-explained/)) and why?
Please no bashing each other, I’m interested in everyone’s opinion on wastegates here.
I personally lean towards external wastegates 90% of the time as they flow great, almost all use vband connections (gaskets/hardware pre turbo is always a failure point) and can be recirculated if noise is an issue.
That said internal wastegates also have their place, keeping things simple/cost effective when compared to external wastegate options.

Super throwback video of my KA24e-T with a Tial external wastegate having some fun in AZ.
FN5sy0nlecE

tunermt
04-06-2022, 07:14 AM
My Sr20det e30 with an internally gated evo8 turbo.
**I must admit I?m itching to swap out for a g30 and 44mm wastegate (both vband of course).
https://brewedmotorsports.com/wp-content/uploads/2020/03/AEM-infinity-SR20det-package-602x400.jpg

My S13 KA24e-t running a Tial external wastegate:
https://youtu.be/ssTjGgQQrdE
ssTjGgQQrdE

tuzzio
04-06-2022, 08:04 AM
I've always ran external wastegates as I like the noise when they're open.
I've also seen internal wastegates not be able to flow and cause boost spikes etc.

I'd also say 90% of the time, an external wastegate is the better choice.

jedi03
04-06-2022, 11:11 AM
+1 external would be the better route...however, i run internal due to cost and simplicity lol

tunermt
04-07-2022, 07:59 PM
For external gates i will personally only use Tial wastegates (https://www.brewedmotorsports.com/product/forced-induction/wastegates/tial-sport/tial-mvr-44mm-vband-wastegate/) or Turbosmart wastegates (https://ffrides.com/product/turbosmart-wg45-gen-v-hyper-gate-45-14psi-black/). Over all the years of tuning all sorts of different engine configurations i've always had a great experience with both Tial and Turbosmart wastegates.

https://www.brewedmotorsports.com/wp-content/uploads/cm/data/manufacturers/tial/TIAL-MVR-vband.JPG

https://ffrides.com/wp-content/uploads/2021/10/dc4e5273e00d2ac3b2095fa80cc641fa.jpg

inferno s14
04-07-2022, 08:57 PM
personally running a single hypergate 50 Turbosmart on my 2JZGE S14.
never had an internal wastegate setup and probably never will, Although you can have a much cleaner and lightweight turbo manifold with an internal wastegate turbo and save $500 - $1000 depending on how many wastegates you run.

SoundEfx
04-13-2022, 09:06 PM
After having experience with both, Audi B5 S4 and boosted Nissan Sentra, my preference will be external. If or when it goes bad, you can simply change it and get back on the road.

From what I've seen, internal ones are not that easy to get to and having to change the whole turbo is never fun.

silviaks2nr
04-15-2022, 08:26 AM
External gate, recirculated into downpipe. None of this out the hood BS

jedi03
04-22-2022, 10:43 AM
internal are very easy...the flapper rarely goes bad, but based on the v-band and normal location I see from external I do see the ease of external as well!

tunermt
05-03-2022, 08:44 AM
External gate, recirculated into downpipe. None of this out the hood BS

I?m down to vent behind the firewall but also not a big fan of out the hood

jr_ss
05-06-2022, 10:44 AM
External gate, recirculated into downpipe. None of this out the hood BS

1 month of open dump was all it took for me to change my setup to a recirculating setup. It was so obnoxious.

e1_griego
05-06-2022, 02:24 PM
+1.

Novel for a few weeks.

Recirc'd for many years now.

tunermt
05-09-2022, 08:21 PM
my S13 with external gate vented has always treated me well and not annoying. I do use a 3 port EBCS (https://www.brewedmotorsports.com/product/forced-induction/boost-controllers/brewed-motorsports/3-port-electronic-boost-control-solenoid-bcs/) "electric boost control solenoid" to hold the gate completely closed until 12psi though so you don't hear anything from the wastegate until you really put your foot down and make some real boost.
I find with this setup i don't ever hear the external gate until i'm accelerating hard in which case i don't mind the extra sound at all, even enjoy it. (If it were starting to open earlier and make noise during light/medium acceleration i'd get sick of it real fast!)
https://www.brewedmotorsports.com/wp-content/uploads/2020/03/mac-3-port-ebcs.jpg
https://www.brewedmotorsports.com/wp-content/uploads/2020/03/3-port-ebcs-external-waste-gate.jpg

Kingtal0n
05-17-2022, 06:07 PM
External for control

Recirculated for comfort

https://i.postimg.cc/FKdtsjvD/IMG-8468.jpg

If you want to hear it anyways use a cutout. That provides the pressure drop to turbine necessary for increased power and noise on demand. Then close it when you get a headache. :D

tunermt
06-12-2022, 10:22 PM
I personally don?t like the sound of cutouts (post turbo) little to open downpipe sounding for my taste. I?d much rather hold a turbo smart wastegate (https://ffrides.com/product/turbosmart-wg45-gen-v-hyper-gate-45-14psi-black/) closed with an EBCS for quiet low load driving and let the wastegate scream/open only a couple PSI below target boost.
(Something like your single turbo V8 or any large displacement engine with a ?smallish? turbo this option isn?t so reasonable as the large displacement will spool the turbo/force the wastegate open at much lower rpm/throttle inputs which definitely gets noisy fast.

Kingtal0n
06-13-2022, 12:12 PM
Oh I agree 100% the noise is unbelievable. I use ear plugs when I have that thing open. And the raw sound of it.... Not pretty until the turbo really spools.

Its more just for idle conditions, the cam lope around parking lots and stuff. warns people the car is there too, helpful and in traffic. More of a show item than go item for my purposes. Everytime I destroy somebody they want to know whats in the car 'yo what the fuck is that!' pretty funny, so I Pop it open for 30 seconds without saying a word and the look of raw confusion and disbelief is worth having it.

What it really needs is a muffer on the cutout side. But there is no room under there. I really want to try a flowmaster 40 series for the tone, that classic sound ya know? But where I'm going to put it... One day I'll think of something. Meh got bigger things to worry about

tunermt
08-17-2022, 10:17 PM
Oh I agree 100% the noise is unbelievable. I use ear plugs when I have that thing open. And the raw sound of it.... Not pretty until the turbo really spools.

Its more just for idle conditions, the cam lope around parking lots and stuff. warns people the car is there too, helpful and in traffic. More of a show item than go item for my purposes. Everytime I destroy somebody they want to know whats in the car 'yo what the fuck is that!' pretty funny, so I Pop it open for 30 seconds without saying a word and the look of raw confusion and disbelief is worth having it.

What it really needs is a muffer on the cutout side. But there is no room under there. I really want to try a flowmaster 40 series for the tone, that classic sound ya know? But where I'm going to put it... One day I'll think of something. Meh got bigger things to worry about

On that note I had a good friend put a sport bike muffler on his external wastegate. Haha sounded much ?softer? until the lil muf exploded and lost all its guts.

tunermt
09-23-2022, 03:48 AM
Expanding on the external wastegate there’s the Turbosmart Egate (https://ffrides.com/turbosmart-egate-electric-wastegate-haltech-dcmd/)
This free Haltech DCMD offer sure does make it tempting, always wanted to run one of these on my sr.

PoorMans180SX
09-23-2022, 02:01 PM
External are great with older turbo designs, but EFR?s and the G-series have wonderful internal gates that are good enough for everything but kill mode. I don?t see a reason to run external on these turbos unless you?re trying to push the limits of flow.