Way to much boost!!

[wayneo]

I just recently installed a .57 trim Godspeed Turbo I know its junk least thats ### i hear along with the Godspeed 38 mm wastegate..ok my question is why is my car pushing way to much boost I have a 15 psi spring in the wg but its reading 30 psi I have checked all my lines and everything but can not figure out why its boosting so much... the car is completely stock other then a few extra things I have like 2g pistons undrive pulley but if anyone could help me figure out the boost problem. Would be greatly appreciated

 

[XTurbodTalonX]

The simple answer is that your wastegate is not opening to route the exhaust gas around the turbine. Something is sticking or routed incorrectly. I am not familiar with specific springs to adjust boost. I've never had any turbo other than a 14b. You need to get a boost controller. If you have a speed shop nearby, buy one ASAP. You can also build your own at Home Depot if you're in that much of a pinch. If you don't have any fuel mods, I would stop boosting 30 psi as of the last time you did it.

Make your own manual boost controller.

 

[JusMX141]

Where are you running the signal line on the wastegate? It should be at the lower port.

 

[norcal_drifter]

i had the same problem once with my 16g. make sure your vac. lines dont have holes or rips even a pin size whole with not let your wastgate open up.

 

[uscav_scout19d]

Mine was doing the same thing. my problem was the vaccum line to the wastegate. make sure the line is its own source and nothing else is being feed off of it. Also on my godspeed wastegate I had to run just a single vaccum line to the bottom nipple. Hope this helps

 

[wayneo]

The wastegate is opening and closing and my wastegate is pulling vacuum from intake manifold by itself.... and I have a manual Turbo xs boostcontroller just haven't put it on yet I've replaced all the vacuum lines

 

[Jon91TSi]

The wastegate is opening and closing and my wastegate is pulling vacuum from intake manifold by itself.... and I have a manual Turbo xs boostcontroller just haven't put it on yet I've replaced all the vacuum lines

If the wastegate is opening and closing it should be controlling your boost. Are you running the bottom port and leaving the top port vented? Are you sure the correct spring(s) are in the wastegate and they are seated correctly? If all of the above are true, there is no reason why it shouldn't be controlling your boost. Have you tried using your compressor housing (if there is a port available) as a reference rather than your intake manifold?

 

[H4G64T]

How are you confirming the wastegate is opening and closing?

 

[Jon91TSi]

How are you confirming the wastegate is opening and closing?

And at the correct pressure for the spring installed. Forgot to put that in my post, good one.

 

[Dert]

Instead of hooking the wastegate up to the manifold, hook it up to a boost source like a nipple off the turbo housing if you have one or even tap one off your intercooler pipe. Wastegates have a spring in them that hold the valve shut until greater than the rated spring pressure is reached. IE: if your wasted gate spring is rated for 17 psi then it will stay closed until you build at least 17psi of boost and the pressure forces thes valve open. Hook your gate line up to a boost souce, preferably off the compressor housing if you can, or tap a nipple onto your intercooler pipe. If all else fails, try a different also as previously asked, where is your boost gauge hooked up to? You may be getting an inaccurate reading because there is no way you should be able to hit 30 psi on stock fuel system and not hit fuel cut.


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- Sent from my iPhone using Tapatalk

 

[wayneo]

I have a faze boost gauge and it is run off my intake manifold and my wastegate the top port is hooked to a vacuum source and the bottom port was left open I can watch my wastegate open and close.... and yes my car hits fuel cut off I mean yes I understand now ### I have is junk but it should still run none the less I'm not tryig to make a dragcar so I should try and run my wastegate off of my Turbo housing...my wastegate needs to pull vacuum from the top to close the spring to release pressure

 

[LandoAWD]

port and polishing your exhaust manifold, turbine housing, o2 housing will also help with boost creep

Almost entirely incorrect.

Use your SHIFT key.

 

[Jon91TSi]

port and polishing your exhaust manifold, turbine housing, o2 housing will also help with boost creep

Obviously you have no understanding of how an external wastegate system works, since your reply is completely irrelevant. Sorry to be harsh, but it's garbage like this that really irritates me... This guy doesn't have a creep issue, nor a spike issue, HE DOESN'T EVEN HAVE CONTROL!!

 

[crash89]

my wastegate the top port is hooked to a vacuum source and the bottom port was left open I can watch my wastegate open and close.

Thats where Im seeing things ass backwards. Like others have suggested, try running just a single boost source FROM the compressor housing on your turbo TO the side port on your wastegate.. Leave the top port open. The line from your intake manifold should run to your BOV..

Do those things and tell us how it works.

 

[Jon91TSi]

I have a faze boost gauge and it is run off my intake manifold and my wastegate the top port is hooked to a vacuum source and the bottom port was left open I can watch my wastegate open and close.... and yes my car hits fuel cut off I mean yes I understand now ### I have is junk but it should still run none the less I'm not tryig to make a dragcar so I should try and run my wastegate off of my Turbo housing...my wastegate needs to pull vacuum from the top to close the spring to release pressure

You have this backwards, if you have the boost referenced to the top port, you are actually forcing the diaphragm shut, rather than pushing it up and open as would the bottom port, thus allowing the exhuast gasses to bypass the turbine wheel.

 

[wayneo]

That worked left top port open and run the bottom to my Turbo thank y'all the way I had is the way I was told to hook it up

 

[GRAVEDIGGER]

Where are you running the signal line on the wastegate? It should be at the lower port.

Yes, that was my first thought

my wastegate the top port is hooked to a vacuum source and the bottom port was left open

There's your problem.

You have this backwards, if you have the boost referenced to the top port, you are actually forcing the diaphragm shut, rather than pushing it up and open as would the bottom port, thus allowing the exhuast gasses to bypass the turbine wheel.

Bingo!

 

[Jon91TSi]

That worked left top port open and run the bottom to my Turbo thank y'all the way I had is the way I was told to hook it up

Don't always listen to what you're told.

 

[GRAVEDIGGER]

That worked left top port open and run the bottom to my Turbo thank y'all the way I had is the way I was told to hook it up

Glad to hear you got it fixed.