Need Forge WGA help too much Boost!!

[43975]

Need Forge WGA help too much Boost!! FIXED!!

OK the guys at PG did my turbo swap (GT28RS) and installed a Forge WGA Tthey adjust the rod to the very bottom almost the very last thread before falling off to keep the boost at the minimum we though 5 PSI. When I left I was boosting 10-10.5 PSI. We all thought that the Forge unit must have come with the 10 psi spring in it. Ken went ahead and ordered up the 5 psi spring. When we went to swap then it turns out the 5 psi spring was already in it. What gives? If I have the 5 psi spring in and the rod is adjusted all the way down, how is it possible to still be boosting 10 psi?
Here's a pic of the unit on the car maybe someone has some ideas!

 

[jbilliel]

I am installing my forge today and I hope this will not be a problem on mine. I don't think I would feel comfortable running that much boost.

 

[JPR-MSP]

OK the guys at PG did my turbo swap (GT28RS) and installed a Forge WGA Tthey adjust the rod to the very bottom almost the very last thread before falling off to keep the boost at the minimum we though 5 PSI. When I left I was boosting 10-10.5 PSI. We all thought that the Forge unit must have come with the 10 psi spring in it. Ken went ahead and ordered up the 5 psi spring. When we went to swap then it turns out the 5 psi spring was already in it. What gives? If I have the 5 psi spring in and the rod is adjusted all the way down, how is it possible to still be boosting 10 psi?
Here's a pic of the unit on the car maybe someone has some ideas!

maybe the hose that goes to the WGA es bended a little...check that...
(ugh)(nailbyt)

if the rod is adjustable, maybe is too adjusted therefore is physically impossible for the WGA to open fully to liberate the excess of flow...

 

[43975]

I am installing my forge today and I hope this will not be a problem on mine. I don't think I would feel comfortable running that much boost.

It shouldn't be an issue for you if your uniing the stock turbo, I'm thinking it has more to do with bracket holding it on to the GT28RS, sisnce it's not what came with it and all. But I'm totoally clueless. I now other guys running the GT28RS and running low 5-6 PSI boost so I know it's physically possible. I really need to figure this out. It's not fun having to keep an eye on the boost gauge every time you take off quick or go to pass on the express way. I really enjoyed driving WOT in the upper RPM range, I'm not forced to feather the thottle and shift early so I don't get to high into boost.

 

[43975]

Ok thought I should update this seeing as I just fixed this issue!
I ended up taking it apart and swapping out the springs again. The unit supposedly came with a 5 PSI spring in it, and Ken at PG ordered another 5psi spring which came 2 in the package, we swapped one and it stayed the same.
Well today I swapped in the last of the three which were all green BTW, but when reassembling it all I realized that the Blue spring holder inside the WGA can be tightened down real tight or left fairly loose, The tighter it got the more load was put in the spring. So I left it kinda loose but stable and also gave the Rod a little less angle by the way it tightened it down. The way it was before it was at a real bad angle and seems to get stuck on itself. I bolted everything back together and went for a test drive in the local empty lot and sure enough 5-6 PSI at WOT!!! I can't tell you how happy I am. I drive it for about 10 min. to make sure it wasn't a fluke but sure enough never got passed 7 psi no matter how hard I tried!!!

 

[nazgul350r]

Thanks for the follow up maybe someone can search in the future.

 

[stdntDrvr]

i've taken apart my Forge WGA and i don't see where you can loosen the blue spring holder?

 

[43975]

when you remove the allen bolts and take off the metal top, directly underneith is a blue plastic cap that holds the spring in place it screws onto the rod that goes through the whole WGA. When I was thinking about how everything works I realized that the tighter you screw it in the tigher the spring gets...more load. I left it secure but rather loose. I didn't screw it all the way down. That solved my issue and I'm boosting 5-6 psi. With it fully tightened I was at 10.5 PSI. I will also say that I needed to adjust the vas hose. I did this by simply rotating the metal cover one bolt hole. It was facing down causing a strange bend in the hose, it wasn't kinked though. By doing this it gave the Vac line a straighter route which might have helped as well.
Hopfully this helps you. What are you boosting? what are you running.

 

[stdntDrvr]

nothing yet...i'm waiting on my turbo to get here...my stockie died so i'm going with an MPNick stage 1...and i don't want to boost more than 6psi.

 

[nvmsp]

your gonna love having some topend now with the mpnick turbo. Such a difference at half the cost of a new turbo. Without even adding more boost. And when you do, man this car hauls ass.

 

[43975]

topher what are you boosting now?
Let me know how it goes and if my info helped

NVMSP: I got your PM, just let me know when you send it.

 

[stdntDrvr]

when you remove the allen bolts and take off the metal top, directly underneith is a blue plastic cap that holds the spring in place it screws onto the rod that goes through the whole WGA. When I was thinking about how everything works I realized that the tighter you screw it in the tigher the spring gets...more load. I left it secure but rather loose. I didn't screw it all the way down. That solved my issue and I'm boosting 5-6 psi. With it fully tightened I was at 10.5 PSI. I will also say that I needed to adjust the vas hose. I did this by simply rotating the metal cover one bolt hole. It was facing down causing a strange bend in the hose, it wasn't kinked though. By doing this it gave the Vac line a straighter route which might have helped as well.
Hopfully this helps you. What are you boosting? what are you running.

so i should just loosen the allen bolts that hold the WGA together?

 

[43975]

so i should just loosen the allen bolts that hold the WGA together?

Remove the allen bolts so you can open the WGA. once open you'll see a blue plastic cap. The blue plastic cap unscrews exposing the spring that it holds in place. Also keep in mind that that green spring is the 5-10 psi spring. That's the one that should be in there, to make the boost you'll looking for.
What boost are you currently running?
What boost are you looking to run?

 

[stdntDrvr]

the spring looked like a normal spring...really didn't have a color to it. i would like to run 7psi MAX...i'd prefer 5-6psi. when i took out the external bolts, i noticed a spring, a blue cap at the bottom and a larger blue cap at the top of the WGA. do you have pics of what you're talking about?

thanks!

 

[43975]

What are you boosting now!?
If it's a forge unit there is a spring color.
Green - 5-10
Yellow - 9-14
Blue - 14-18
Red - 19-24
Just tighten the blue cap on top that seals the spring in just enough to secure it don't tighten it all the way down. That should do it.

 

[stdntDrvr]

i'm not boosting anything now...i don't have my turbo in my car...i just bought the wastegate...i've got an MPNick upgraded turbo on the way along with a CS S-pipe, SLS J-pipe and steed speed exhaust mani. i won't have it all on my car for a couple of weeks.

when you say tighten the blue cap, do you mean the bolts on the outside of the WGA or can you loosen it internally?

 

[43975]

do me and yourself a favor and take a bunch of pics of it as you take it apart and post them. Basically one pic at each step, remove allen bolts...pic. open metal cover to expose the blue cap...pic. Unscrew blue car to expose spring...pic. Spring taken out to see what color it is...pic.
It's the only way I think I can help you, If you've taken it apart already you should know what I'm talking about....

 

[stdntDrvr]

will do...i'll post them later tonight. thank you for your help!

 

[stdntDrvr]

here are the pics. i have a green spring

 

[43975]

For some reason I can't tell what's what. The green spring is the right one. But I think under that metal tip is the blue cap. It unscrews so you can remove the spring while still on the car. Non your your pics show it. Unless for some reason the metal cap over the blue plastic was removed. Either way that should unscrew so the spring comes off with the fatter end coming out first. when installing it onto the car you just don't screw that blue cap back on. Non of your pics show the spring removed