Wastegate Actuator Testing 

I just want to say THANK YOU, for highlighting the part you are replacing in green or just various colors. You doing that makes it much more clear on what you're replacing, so thankful

Great Channel and love the quality of videos! Keep up the awesome work.

Willie is an amazing welder and it's showing in your video. So proud of that young man!

Great vid! Keep em' coming! I had the same problem with my actuator and I ended up hooking up a secondary spring to help the weak MHI actuator. Just a couple bucks and 30psi was as high as I dared!

Great video, right to the point and provides simple but key insights about good and bad waste gate actuators. Thanks!

Awesome video! love how you highlighted the Watergate acutator! Keep it up!

Great job putting everything into motion, by the way. I made the initial tech thread to encourage others to participate and build things themselves because that's the true spirit of a DSM owner. I still fabricate these from time to time for guys who lack a welder, don't have a garage, etc....but it's great to see my discoveries are still being utilized seven years later. :)

Just wanted to mention that you / this test was Not a failure! It was a successful "Test and Compare" which is exactly what we needed to see. The actuator testing was a success and the compare was a success which showed us how to test and compare. It's important to test before putting into production and although the outcome was not as hoped for, this test proves again (as a reminder), that just because "it's New" doesn't always mean it's better! Thanks for posting the vid!

Hell Yeah! I've been running one of those actuators for 10+ years with great success!

Excellent editing.

Cool video; For anyone interested in some calculations, Pressure and Force are related, and not they're not the same ; for example, 20 PSI is pressure; 30 LBS is force ; this 30 lbs force,if the diameter of the diaphragm is, say, 2 inches, ( 1 inch radius), will correspond to a pressure of (Pounds per Square Inch) approx. 30/ (3.14x1) , or 9.5 PSI; with the same diaphragm (2 inch diameter),if you need 20 PSI of boost,the force on that scale would need to be 20 x 3.14 or 62.8 LBS; but let's not forget that the exhaust pressure plays a role also, it exerts pressure on the wastegate(inside the turbo/exhaust housing),and for that reason, final testing needs to be done under load,be it on the road or on a "dyno"; in either case the boost gauge tells you all you need to know. In the video, the 20 PSI and the 45 LBS allow us to back calculate ( not that it matters much...) the useful diameter of the diaphragm inside: its area is (45/20) 2.25 sq.in. and the diameter is 1.693 in; this should be the same as measuring the OD of the actuator(smaller dia. inside the crimp) and subtracting twice the metal thickness,possibly .062,if the wall is .031. edit at 06:05 you should re-set the gauge to read in the same units; you have psi and inHg there,and 1 psi is 2 inHg.

Thanks for the video. I'm having a little tuning issue with my system not holding boost. I am a little confused about the waste gate actuator holding boost. My stock old actuator was holding about 12 psi of boost. When I attached a pressure pump on it, it would start to open at about 2 psi but would let my system boost at about 12 psi. I got a new actuator that starts to open at about 14 psi with my hand pump but only lets my system hold about 12 psi. Not sure how that works but I purchased stronger springs for my actuator.

This channel is going big nice!

This is a dope channel… Glad I stumbled across it

Great video. Great instruction voice. Most videos speakers mumble and I can't understand them.

Loving this video man! Subscribed

Knowledge + humor kills us everytime! Keep it UP! (pardon my pun)

Great channel, hope for more

That's a nice closed course. So nice it's used by everyone else.

great video production.

Great tutorial on testing actuators man :)

Great video. Thanks for the info.

Great vid!

So Good! Keep 'em coming!

Superb!!!

Great video. Been looking to see what typical pressure should open the actuator. Mine is not opening at 30psi!!

The Holset actuator mod definitely works to revive older MHI actuators with blown diaphragms, or if you're looking to hold more boost to redline on any TD05H-series turbo where turbine backpressure is so great that the stock actuator can't pull the flapper closed as the RPMs rise. That results in the common spike/drop when running a boost controller on too soft of an actuator. ;) There are a few different pressures to the Holset actuators out there- you can't really know what you have until you test it, but I've found the actuators which come on the newest generation of HX35's from Dodge trucks (99-02) as well as some HX40's (noted by the "indented" top cover where the hose nipple is located) seem to have the stiffest springs.

Agree with tom. So good! subscribed!! btw tom loving the miata build!

nice topic .. well done what about engine knock with that amount of boost? does that 26 psi include air pressure?

Nice video cool info the nice DSM tops it off!

Very well explained stuff in this video.... is there any way we can get the value of pressure required to open the wastegate by only measuring the weight to open it.

Nice DSM!

Very useful. I planned on a new wastegate for my 2G, but maybe I'll start here instead. Thanks!

I have a question about my external wastegate. I know your video was about internal but I figured I'd ask. My wastegate seems to be stuck open a Crack when it's installed because a metal ring that came with it forces it open. I'm not sure if that's normal or not. I'm able to blow threw where the boost line is supposed to go and there is no resistance I'd figure it would be the oposite? Wastegate has a 7psi spring in it and my megasquirt keeps cutting spark because of over boost protection set at 11 psi.

MBC, eh? Dang. I'm spoiled with a 3-Port EBCS in my Mazdaspeed 3 running in interrupt mode. Our stock EBCS is 2-port running in bleed mode. Have you tried adjusting in more pre-load on the WG actuator arm?

Great video. Thank you

Awesome vids...well thought out and informative...(Sheesh..sounds like I'm grading an essay...lol).. Keep em coming..well done.

randomly came to watch this video and when I saw that 1G, it bringed back good memories :D

Private close course? my big...wastegate hahaha great video Budd 👍

Good old Raw Boost! :) Any boost controller at all? or just the WG pressure?

Just started watching ur channel It's great Do u know power ur running?

Great video

Thanks for the info.

I got terrible timing to try and test my boost issues. It is so damn hot! Car was hitting 18psi easy on my way from work yesterday, past 2 weeks it was hitting 13psi only. Replaced my Grimmspeed EBC and reset learning, hit 18psi right off the bat. This morning I barely hit just under 16psi... I am starting to think its an issue with my wastegate... Will continue to test.

i have a 3000gt vr4, builds no boost at all, and if I hammer down the throttle it starts sputtering like crazy in second or higher gear but runs normal if I don't try and build boost. could a stuck open wastegate cause these problems. I tried pressure testing the intercooler piping and have some tiny leaks but nothing that would actually stop my car from building boost. any ideas?

great video. you know what your taking about, anyway. im getting a 2016 jetta tsi turbo and i was curious of a one second hiss sound during kinda hard accel. is this something i should i should be concerned?

Cool informative video.

awsome video deffinatelly subscribing epic quality :D

Do you need to retune the motor after you change the wastgate actuator ?

Good content new subscriber 💯🤙🏼

Proper video , thanks

Thank you Sir

Awesome video, good editing, good speaking. 1 quick question, I am feeling a leak on the line coming from the turbo/Intercooler hose into the wastegate. So I believe only the exhaust pressure is opening up the wastegate. This is causing an overboost in higher RPM of 3-5th gear. To prove if this is a correct theory: Do lower gears open the wastegate from more exhaust pressure and higher gears from more boost pressure?

where did you buy that boost leak tester. and do you know if it will work on a evo 8 stock turbo. thanks.

Just a question: I'm about to install a heavier Spring tension in my waste gate actuator too. My car has had an ecu tune and doesn't hold the requested boost. Again though remembering it has had a tune for the requested boost.. In this video you have increased your boost (air) but have not mentioned fuel to compensate at all. Have you taken this into account somewhere or is it generally compensated for somewhere else? Limited understanding on modern systems but from what I do know this can can run the risk of leaning out and frying a motor... Can someone clarify. G

awesome video! I had a question. What causes a wastegate actuator to be stuck open? I have to replace mine along with the diverter valve. so these two made my car throw a code as well for the boost pressure sensor high signal! Hmm... any thought are very much appreciated... I Drive an MKV 2007 Jetta GLI 2.0 Turbo FSI Engine. Thanks Again Man!

I’m wanting to upgrade my oem wastegate on my 14b. To a Kinugawa 18psi. Will I risk any potential harm to my motor being that I’m still untuned and no boost controller?

As I’m driving my waste gate duty is at 30-90 % so I don’t hit target boost while I’m cruising unless I’m at WOT, could this be my issue?

Hello Velocity, I have a problem, my car has revo stage 2+ but the turbine above 4,500 rpm, can not handle the pressure, so 1.5 bar drops to 0.8 bar. I've changed the spring and membrane of the wastegate, but the problem still persisted. Do you think the spring load is poor?

Good old private closed roads ;)

Do waste gate actuators fail over time because of heat soak \ heat cycles? And would heat wrap of the exhaust side of the turbo and down-pipe get the waste gate actuator to last longer?

Hellow, I have a question and wonder if can get information on? I'm wanting to put a wastegate on a twin turbo supra and are wondering if it has been done before? Cheers for anything.

Hey man question would that give you more even if the car comes with 8psi from the stock turbo?

what sort of boost controller are you using. I'm aiming for 20psi on mine ATM I'm running gate pressure which is 10PSI. i'll be controlling it via the ecu i'm running (an aftermarket unit) and a 3 port solenoid theoretically this method of boost control via the 3 port solenoid should be capable of bleeding off all the pressure going to the gate

hey how do you hook up that guage. I'm thinking if I can put one on my big truck I might be able to figure out my loss of power problem. my mechanic switched out my actuator with a 21lb one. but I hear other truckers talk about 48lb boost. I don't see 48 lb happening with a 21lb actuator. correct me if I'm wrong.

What size injectors are you running for e 85 and the 23psi on that tdo5 14b

@Nathan Pratt , if it's stuck, it may not be able to open up all the way either, which could cause the overboost. What does your boost gauge show? Make sure the fire ring is seated properly and that the spring and diaphragm move freely when you apply pressure to them. Also, find your specific car forums and post some pictures and I'm sure someone can help pinpoint the issue. Good luck!

How do you know what boost to stop out before engine damage?

I want to know when you start the engine, in which position the westgate goes, open or closed

Nice! Was that 26 psi on the 14B?? The last pull looked strong!

where did you get your boost gauge is awesome I want one

We installed a turbo on my truck but the turbo doesn't have a wastegate actuator so i hooked a return spring to keep the wastlegate closed. Will that have a bad effect on the turbo or the engine?

Isn't this going to damage the turbine? As far as I know, the Wastegate serves to unload the turbine in case the pressure reaches the maximum allowable value?

What turbo is that 16g? I have what I think is a 14b and it has 12 blades on the compressor side.

My wastegate leaks air from the bottom of the diaphram where the rod comes out. Does that mean that it needs to be changed? It's not meant to leak from there right?

I use the manual ball pump and it works. But is that mean it’s faulty? Need to be hard or something

My wastegate is opening fully with 5psi and that is oem Mitsubishi is that a sign that it is a bad wastegate? Trying to figure out if wastegate or bcs is going bad.

Im a little late to this video but i think im having a waste problem but dont know if its the spring or the actuator. From my tuner im supposed to reach 20psi in full boost and its good in 1st and 2nd. But when i go into 3rd and hit full boost i begin to overboost to about 21psi which is not good. Its a 2.5l boxer with a 4speed. Any help would be much appreciated

What should i do IF: I'm having turbo flutter (tututu) with OEM wastegate, and the thing that confuses me most is that the (tututu) only comes when under 2000rpm (like releasing gas pedal in traffic?)

Adding more boost is more air and needs more fuel not to lean out. Advise for a tune if your ECU can't cope with minor change. Adding boost is not hard but there are other perimeters that come into play which should be addressed and you have not informed of the consequences.

Iam running 22 psi from a flashed map but once i bunged up the dv holes and it was an animal Do i have a bad actuator its a 2000 audi tt 225 model thanks

How to tell the difference between pressure and vacuum controlled actuators?

How far does the wastegate open at its rated pressure?

... how about the fuelling for the extra boost?

Can we get boost by adjusting waste gate by moving the adjustment bolts away from valve

I'm trying to diagnose a possible wastgate problem. When I'm in 6th gear (automatic) and hit the gas and downshift to 5th or 4th, I lose power but RPM's increase. Just replaced the catalytic converter, no luck there... Any suggestions?

Hi my waste gate is working sometimes and then other times it goes into limp mode on a merc ml 280 can it be fixed or do I have to get a new one

I have a modern Turbo Engine with n75 Regulatorsensor and wastegate, But a stiffer wastegate dosen't work anywhere, the software is closing the trottlebody automaticly

howzit, recently I blew my turbo on my 1.9tdi VW Polo , I had a new one installed, but now I have extreme turbo lag, in first gear there is no boost at all, and my car PING's when I reach 3000rpm's, but when I change to second gear , the turbo boost's normal , up to 6th gear there is no problem as long as I keep the rpm's above 1800. otherwise the car smokes and gets nowhere , do you think that the actuator needs adjusting ? thanx

does they always get PLUS pressure or vacuum pressure? or is it not important for the testing

Nice car man :) i have the same but with 4g63 not turbo! for now.... :D

Hi guys, nice vids, i have a focus 2010 1.6 tdci 109hp and i have the same code coming up. I changed the solenoid valve and the egr valve as i had a stick open egr code as well. Not solved. It’s strange as if I accelerate to the floor in 2 nd, 3rd, 4th, 5th from under 2000 rpm the turbo will do full boost, about 1.1 bar and hold constantly until i shift into next gear at 3-4000 rpm, i have a boost gauge; if i try accelerating from 2000 rpm or higher the boost goes to 0.5 0.6 and if i keep my foot in it will go into limp mode. No sensor codes or other codes come up, i hear no sounds of air escaping anywhere. Any idea what can cause this? Mechanics are baffled also, thank you for any help, it’s needed

+Velocity Labs I have a rattling sound on my 06' VW GLI MKV and after days of research I found out that its the Wastegate actuator rod that is a bit loose and it bangs against the metal around giving the rattling sound upon decceleration. Do you think if I just replace the rod/ wasgate actuator, the noise will stop?

Hi bro, I have 2JZ with Ar60 turbo, is giving me problem on Westgate the turbo is not opening what u suggest ? Thanks

Are you ErikTande on tuners? I think I've watched your build awhile ago.

what shampoo do you use

Totaly subbed... btw are you the guy that does the vegan videos lmao

can-you-adapt-a-2002wrx-with-a-TD5H-20G-to-run-a-dual-port-waste-gate-actuator?

Hi guys, do you have the make/model number of your boost leak tester? I could use one of these!

What about vacuum stye actuator? Replaced solenoid, replaced vacuum lines, cleaned air cleaner, have no power. I have a 98 k3500, 6.5 diesel.