man love the polish look might just buy it since it looks pretty lol but good luck on the install bro

 

Just put a little oil on it and the air hose slides on. Then use a wire tie to secure it just in case. Yeah , it is tough to get it on but it's doable. Easier if you upgrade your air hoses from stock to a larger diameter, as I did.

 

yeah, ive had it on and off a few times, its just my least favorite part.

 

I'm happy to see that the part arrived with ease and that you're happy with it!

This particular actuator was the last one we had in stock, and I was actually going to put it on my car for some testing, but I've ordered plenty more from our UK office for stock.

If anyone else has any questions, let me know!

 

A couple of questions:

Does the Forge piece have a stiffer spring? Is the spring pressure adjustable, or just the rod length? Is there a spring kit available? What is the spring pressure set to?

Please let us know if it helps with boost taper. I'm hoping this unit will allow me to run 25 psi on the stock turbo throughout the rev range.

 

Thanks again Mike for all your help and allowing me to get the last one you guys had. It's a quality piece and I recommned anyone with the stock turbo to check it out.

 

Like our valves, there are 4 interchangable springs for the actuator bodies. This is also the smaller of two size bodies, making a total of 8 springs. The corresponding spring pressures are the same, though, between the two size bodies.

The actuators are assembled with a spring within the range of stock boost pressure, but can easily be built to order with a stiffer or weaker spring to your liking. Each actuator only comes with one spring installed inside, and the other springs are only available separately for a fee. They are fairly expensive to manufacture for their size.

Each spring has a range of boost that it will hold, so the adjustment is done by adjusting the pre-load with the turn-buckle at the end of the actuator rod. The lowest spring has a range of about 5-10 PSI while the stiffest has a range of about 21-25.

We don't necessarily recommend changing actuator springs on a regular basis, esspecially if a stiffer one is being used, as this can put undue stress on the diaphragm, similar to any automotive gasket. They are not necessarily one-time-use, but that is why we try to supply the actuators suitable for each individual application.

Replacement diaphragms are also available as needed, but we are currently developing an "indestructible" actuator diaphragm, to eliminate the possibility of the diaphragm wearing or tearing. The term indestructible refers to any normal use and/or normal operating conditions in which the diaphragm integrity will never be a concern. Sure you could cut them with a pair of scissors, but these will be rather expensive to replace. These new diaphragms will not be complete for a few months, however.

The springs will not eliminate the tapering of the boost. The inital crack pressure of the springs causes an initial spike, but the boost will still taper to some extent. The actuators still aloow for the use of a mechanical or an electronic boost controller, though, so there is still the opportunity for further adjustment beyond the level of the installed spring. Electronic boost controllers also, often times allow for adjustment of spiking and boost taper, so those issues can be eliminated to some extent.

Hope this helps!

 

What do you think Mike@Forge?

 

That will depend entirely on each individual's plan's for their car and the amount of boost they are looking to make.

Our actuators were originally designed, years ago, to just be factory replacements, but they EVOlved into a performance modification. As I said, the actuators are adjustable through the use of different springs, the stiffest of which will not crack open until roughly 20 PSI WITHOUT the use of any electronic or manual boost controller.

I'm sure someone will argue that a manual or electronic boost controller will yeild the same effect when used with the stock actuator, and I'll agree that it would. This is just a different method of acheiving the same result, but with a wider range.

One benefit though, would be to use a stiffer spring in the actuator compared to the stock actuator, and with the use of an electronic boost controller, a lower setting can be used to reach the same amount of desired boost, providing and even further amount of adjustment well beyond the level of the stock actuator and an electronic boost controller.

 

Thanks Mike, I have an EBC (and a Forge re-circ by the way ), and if I ever decide to significantly increase the boost, this sounds like a good piece!

 

Thank you for that!

We've had some good luck with the actuators by themselves, but I will soon be putting one on my car as well in conjunction with a new manual boost controller we are developing to get some numbers.

I'm even playing with a new valve we'll be releasing in the next coming weeks.

I'll be sure to post what I find, though we're no longer an advertiser on this site, so I can't do sales or group buys, but we may have MachV or Vivid or somebody else offer something at some point.

 

Cool, somehow let me know!

 

svtbreal, is it difficult to remove the old actuator and install the new one in place? Maybe a how to would be good.

 

Ya I would like to know also.

 

me too