Making to much boost.

[Dsm4lyfe12]

I have an ebay 16g . I was wondering why i was making way to much boost, im pretty sure it has to do with the nut on the wastegate rod, which way should i turn it so its not hitting 30 psi?

 

[Dsm4lyfe12]

alright, i think thats my problem so ill get that welded on.

 

[razrman8]

Do it!

 

[Tyeler18]

Just a temporary fix try running the line straight from the wastegate to the "p" without the T off in there. Then see how it does. And do fix that intake pipe.

 

[Guilty1s]

That and your line pressure source should be alot closer to the turbo, not the throttle body. Tap into your J-Pipe or something.

 

[JusMX141]

The reason the eBay 16G's can't control boost for shit is the nice 34mm wastegate flapper they install for you is covering a 22mm hole:

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If you want even somewhat-decent boost control, you should port the wastegate hole to allow it to take full advantage of the larger flapper:

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[dawid4444]

Okay! rude ass..

Im not rude

I just want to help

You should really try if your wastegate is ok , it will take you like 2min to do it.

 

[aPOS]

Again I will say, test to make sure the wastegate actuator is working and at what pressure it opens the flapper by using an air compressor. Also your vacuum line is extremely long for the wastegate and will delay the actuation time. Is there a nipple on the compressor cover? If no, then put a nipple onto the j pipe and get your source from there. Closer and shorter the line the better.

The reason the eBay 16G's can't control boost for shit is the nice 34mm wastegate flapper they install for you is covering a 22mm hole:

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If you want even somewhat-decent boost control, you should port the wastegate hole to allow it to take full advantage of the larger flapper:

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These ideas relate to your issue. Another concern could be that the diaphram in your wastegate is ruined. Possibly, someone working on your car pumped way too much air pressure attempting to check the pressure needed to move your actuator arm.
Also, if you move your adjustable arm's nut to lengthen, "loosen," the arm too much, the flapper may be partially open all the time. Making the arm short enough, or tight enough, to fully open the flapper without having the flapper always hang partially open is what might work better. Of course, I would also recommend checking your wastegate flapper for being stuck shut.
http://www.dsmtuners.com/forums/tur...actuator-rod-adjustment-proper-tightness.html

 

[JusMX141]

These ideas relate to your issue. Another concern could be that the diaphram in your wastegate is ruined.

Definitely possible. I've blown the diaphragm in a shitty eBay 16G by giving it 20psi during a test once....this was a pressure level that was considered "regular usage" and it blew. Another thing you don't really have to worry about with a MHI turbo, but could "pop" up at any time with an eBay special....pun intended.

 

[EclipticalGS]

ebay 16g, there's your problem.

 

[aba60620]

Interested in an update

 

[Dsm4lyfe12]

Fixed it, i loosened the wastegate actuator arm. It still is hitting 15 but it's not going up past 25 now . And justin mine is ported a little beyond the picture that you showed me. My girlfriend bought it as a gift to get it up and running because the house that it was at was getting forclosed on. And for all of you idiots who like to say, " Its an ebay turbo, THATS your problem, obviously the turbo had nothing to do with why it was overboosting.

 

[razrman8]

Don't get all bent out of shape, we're just messing with you man, calm down.

A turbo-charged vehicle with infinite boost can only be caused by one thing, and that is wastegate/wastegate control.

 

[DSMnOOb00]

MHI 16g - pay for safty!
eBay 16g - pay for fun!

I'm glad you got it figured out!, I would love to see video or pictures tho =)

 

[LiquidX]

Since the arm is loosened up so much now, let us know if it's blowing open during boost or even how far the flapper is opening. It could have just been put on wrong for all we or you knew so it's possible you adjusted it back to where it should be.

I'm just curious to know how it's going to be functioning now.

 

[Dsm4lyfe12]

I cant really boost it hard, considering that the engine has 200 miles on a rebuild. But i did get it to 9lbs of boost at like 5500 rpms. It held the boost completely from around 3600 to 5500 on half throttle.

 

[LiquidX]

You cant boost it hard but yet you have taken it high enough to see that you hit 25 and 30 psi WTF

 

[Grip]

Don't blow the welds on the intake!

You have done a couple things wrong throughout this thread. One, you asked for help and then got hostile when people told you something you didn't want to hear. Two, you didnt research the problem very much if any because ebay 16g's are known to have cheap WG issues one of which is the rod being installed with the rod not being adjusted properly.

Take this as a lesson, Search, Listen, and Learn. If you had to ask the question you have no right to bi*** about the answers.

 

[Dsm4lyfe12]

Don't blow the welds on the intake!

You have done a couple things wrong throughout this thread. One, you asked for help and then got hostile when people told you something you didn't want to hear. Two, you didnt research the problem very much if any because ebay 16g's are known to have cheap WG issues one of which is the rod being installed with the rod not being adjusted properly.

Take this as a lesson, Search, Listen, and Learn. If you had to ask the question you have no right to bi*** about the answers.

First of all, i had a different problem because i've tried loosening the nut. And i could figure out which way to turn it to make it loose, and i turned the whole assembly, and guess what it turned! And i got hostile...... acually i got frustrated with people saying the "Turbo was the problem". Lol And are you a mod? no...your not even a proven member.

Liquid, i didnt stomp it to the floor. The farthest i've seen it go is 20 then it hit fuel cut...because i have no supporting mods.

And for the record, i did research the problem but everytime i do i get nothing that relates completely to my problem this one being the fact of
A. My boost source.
B. The rod
C. Wastegate Diaphram.

MHI 16g - pay for safty!
eBay 16g - pay for fun!

I'm glad you got it figured out!, I would love to see video or pictures tho =)

Im going to get a video of it running half throttle to 9 pounds, and ill show you guys how much i had to loosen it.

 

[95weclipse]

Yeah but there is obviously something different with the "Ebay" wastegates, because many people have been having problems hitting to much boost. Im 100% sure its not boost creep because im running open dp with a huge port on my o2 housing and a moderate port on the flapper.

Well I did port the shit out of the waste gate hole and i ported in side to make it flow easier. and i know it can flow good now.