Forge WGA testing

[Hiboost]

For me zero preload was just barely being able to slip it on the eyelet

I ended up with 1 turn in from there and so far I can do 22-23 psi minimum boost while still being able to get solid low to mid boost control to 26 psi with an MBC. Still tapers beyond 6k but it's a great upgrade for holding boost as long as possible in the mid range.

The Forge is adjusted the same way as the stock WG Actuator. To clarify, most people will want to preload it 1/2 to 1 turn referenced from where you can barely slip it on the eyelet by hand. This will still give you the advantage of the strong WG spring but still allow you to run 22-24 psi minimum boost if desired.

[Evo VIII 4G63]

so what your saying is when u take it out of the box give it another half to full turn then install it and your good to go or what

[Mike@Forge]

No, the units are NOT pre-set from us out of the box.

You will need to manually set the pre-load of the turnbuckle based on your particular car and the desired amount of pre-load/base boost you want within the spring's pressure range.

You want to adjust the turnbuckle so that you need to pull on the rod slightly in order to attach it to the wastegate lever and secure it with the pin/clip. The more pre-load you add, the more you will need to pull on the rod to attach the turnbuckle and the higher the base boost will go.

We would typically recommend running a line directly from the pressure source to the actuator without any sort of boost control in order to dial in the actuator's base pressure. Once you have this set where you want it, go back and add in the boost controller to make your adjustments up from that point.

Here is a picture from an 8 for reference.

[simons]

So if you get the Forge WGA with their stiffest spring, which is red and has a psi range of 17.5-20.0, what is it set at when you get it? A guy at Forge UK told me that the WGA will start to crack open at 17.5 psi and be fully operational at 20.0 psi.

[Mike@Forge]

Again, the units ARE NOT pre-set to any specific level from us. You will need to dial this in yourself when installing it.

And the Red spring actually has a range of about 19-24 PSI.

[chuynh207]

where can I buy the Forge WGA? do I need a tune after I install it?

[ForcedPerformance]

Originally Posted by Mike@Forge

No, the units are NOT pre-set from us out of the box.

You will need to manually set the pre-load of the turnbuckle based on your particular car and the desired amount of pre-load/base boost you want within the spring's pressure range.

You want to adjust the turnbuckle so that you need to pull on the rod slightly in order to attach it to the wastegate lever and secure it with the pin/clip. The more pre-load you add, the more you will need to pull on the rod to attach the turnbuckle and the higher the base boost will go.

We would typically recommend running a line directly from the pressure source to the actuator without any sort of boost control in order to dial in the actuator's base pressure. Once you have this set where you want it, go back and add in the boost controller to make your adjustments up from that point.

Here is a picture from an 8 for reference.

That is a EVO9, not a 10. Are we all talking about EVO9 or 10s?

[voodooman79]

I just ordered this for my MR... I don't have a tune, will I not see any improvement without using an MBC?

[Mike@Forge]

Originally Posted by ForcedPerformance

That is a EVO9, not a 10. Are we all talking about EVO9 or 10s?

That picture was taken of my old Evo 8 actually, but the same principle behind the rod adjustment applies. I just don't happen to have a picture handy from a X.

You will tighten down the turnbuckle towards the body of the actuator to add more preload/base boost, and you will loosen it away from the body of the actuator to decrease preload/base boost.

[fixem2]

So when adjusting the WG down for more boost you just have to use some force to get the rod on the turnbuckle? Any hints?

Mike, I don't see the locking nut on the adjustment rod in your pic, is it needed?

[voodooman79]

Originally Posted by voodooman79

I just ordered this for my MR... I don't have a tune, will I not see any improvement without using an MBC?

answer pleeeeeeeasssse!

[dkstas]

^Depending on how you set the pre-load on the actuator, your boost should rise slightly and minimize taper...this is just my personal experience.

[voodooman79]

Originally Posted by dkstas

^Depending on how you set the pre-load on the actuator, your boost should rise slightly and minimize taper...this is just my personal experience.

thank ya, sir!

[Billy@EnglishRacing]

Are there any other options for the x that are currently out? Hoe do they compare?

[Mike@Forge]

Originally Posted by fixem2

Mike, I don't see the locking nut on the adjustment rod in your pic, is it needed?

The lock nut is generally not needed on a unit with bent rod like the Evo 8 and Evo 9 actuators. Once the turnbuckle is attached and secured with the pin/clip, it's not going to spin on the rod at all.

The Evo X actuator has a straight rod, however, so even once the turnbuckle is attached and secured, there may still be the slight potential for the turnbuckle to spind on the rod, even though it's under a pretty decent amount of tension, so I would suggect using it on a straight rod actuator like the X. We always supply them regardless.

Originally Posted by inneedof

Are there any other options for the x that are currently out? Hoe do they compare?

Other companies offer "higher boost" actuators, but they are just stamped OEM based units with slightly higher tension springs. Still typically not as high as what we can offer with the 4 different springs available. They still have a minimal range of adjustment and aren't rebuildable.

We typically build the units with the red spring, but the base pressures available by request are:

Green spring - 5-10 PSI
Yellow spring - 10-15 PSI
Blue spring - 14-18 PSI
Red spring - 19-24 PSI

The units are manufactured from billet aluminum and stainless steel and we offer a lifetime warranty on them. They're piston based, so there are no diaphragms to fail over time. Also, the piston design provides a wide range of articulation of the rod through the full range of motion of the wastegate lever without any adverse affects of lateral load being applied internally which can lead to excessive wear on diaphragm based units.

We also assemble our units with a flexible water-tight seal between the base of the body and the rod to prevent any intrusion of water that can damage the internals of the units. This problem is far more prevalent on the 8's and 9's with the actuators mounted upside down under the hood vent, but we include them on the Evo X actuators anyway.