Just got a forge wastegate and want to know how to adjust boost. I have the green spring for 5-10psi. Is the only way to adjust boost is to adjust the arm length? I thought if you opened up the wastegate that there was something inside to adjust? The only other thing I see that could be an adjuster is the allen screw on the side below the vac nipple. Does this relieve pressure or something?
Forge Wastegate adjustment
- Thread starter Tzar177
- Start date
hornsfan10609
Certified Mazda Tech
- :
- 2003.5 Mazdaspeed Protege x2
I have a Forge WGA on the way to me right now so I'd like to know as well, but as far as I know the only way adjust it is by shortening or lengthening the rod or changing the spring.
4
43975
I have the Forge and do not touch the Arm to adjust boost. Tzar I told you how to adjust the boost. just open it up an tighten or loosen the blue plastic cap. I've adjust the boost that way several times Currently set at 4 psi but I've had it as high as 10 psi and left it at 7psi for a short bit but got scared because I wasn't tuned with a wideband. Take a couple pics for me 1. sealed 2. with only the cover off and blue cap still in place 3. blue cap off exposing spring 4. bottom (flat section) of blue cap 5. spring out so you can see the threaded rod that runs up the center. I'll do a nice write up to make things super simple. Although I thought I've made it pretty simple in the several PM's we've exchanged.
Some people need pics though.
Some people need pics though.
4
43975
That blue cap unscrews from the rod. Which inturn allows you to adjust the boost.
I'm hoping that will work. I shortened my stock WGA arm to up the boost, but it didn't do anything. I guess something is wrong with the stock one which is why I just bought the forge
u know u could just buy an electronic boost controler and forget about it man. its easier because u can have several different boost settings at the touch of a button..
4
43975
I don't think I have it wrong....
I know for a fact that's how I'm able to control the boost. I've done it several times. It's just a pain in the ass sometimes cause I have to guess how much to tighten and loosen it then drive it ad do it again if I'm not happy.
I know for a fact that's how I'm able to control the boost. I've done it several times. It's just a pain in the ass sometimes cause I have to guess how much to tighten and loosen it then drive it ad do it again if I'm not happy.
Silverspeed2015
Member
- :
- 2007 Mazdaspeed6 Grand Touring
i wouldn't think it would have to do with adjusting the spring I believe its by shortening and lengthing the arm changes the boost. , because by shortening the arm you are putting more tension on the wastegate in return needs more boost to open it up, and lengthening would decrease tension on the wastegate needing less boost to open it. im running a stock t25 WGA on a gt28rs but it was too short and needed lengthened to fit, while i installed it it was still a tight fit putting some extra tension on the internal wastegate so therefore i am running about 13psi instead of the stock boost. Also i believe the only reason my psi is high from extending it is because if i left the stock length i believe i would have been running a lot higher of boost than i am now.
In no way am i experienced with turbos as this is my first boosted car, i am only speaking what i believe i have learned from my own experience
In no way am i experienced with turbos as this is my first boosted car, i am only speaking what i believe i have learned from my own experience
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