TXEVO stopped over my place last night and brought his new Forge DV so we can test and install. He did not have additional springs and it comes with a blue spring.
In short, after bench testing and test driving, I have to give the Forge DV a big .
It has a large valve to actuator area ratio and seals tight as a drum, plus it looks really nice.
You could easily go with a softer spring than the blue, but based on my bench testing and short test drive I'm not really sure you need too. The valve area is a little on the small side, but about the same as the stock valve so...
Under vacum it started opening around 13" (stock is16"), it sealled completely with 20PSI on the valve and as little as 8PSI on the actuator. With the unique valve design I can see how it is possible to install it in either direction, but I would still prefer the stock position.
With the stock air box and a turbo back 3" exhaust, I could barely hear the valve and the drivability seemed just fine.

 

Good write up !

 

I have a Forge DV as well and it's great.

I am running an MBC and holding ~18-19 psi as only power mods. I was actually noticing stumbling in 5th gear at partial throttle. I took a look at my install and the T on the BOV hose was causing a crimp in the hose leading to the vac nipple on the DV. I cut the hose shorter so it's a much straighter shot and it drives perfectly now.

Comparing the Forge to the stock dv is like night and day in terms of quality. The stock plastic piece is embarassing, heh. The piston on the stock valve actually seems pretty stout on mine, but I'm glad I have the piece of mind from the Forge and the ability to tweak it.

Take care,

FB

 

The Forge Dv is working great. Its much better then stock.

I watched as Silver Surfer did some test on my stock BOV and you could really see it leak down and not hold boost well, as this may not be very much its still lossing power.

Thanks for all the help

 

While cruising in 5th gear at highway speeds on partial throttle, I can always hear the hiss of the DV as if it is leaking. Anything wrong with this..

 

No this is normal and desired for smooth driving at part throttle. The turbo is creating more boost at light throttle than the engine needs at that momment. The DV is simply bleeding it off so you don't get surging.