So today i stumbled upon a diverter valve being installed in reverse, i searched about it and there was really no opinions on if its a good idea or a bad idea, and most of the threads were on B6 a4's.

So i was just wondering from what i have hear its hold boost better if you install it in reverse, if thats the case ill go switch it around, but I'm not sure if its a good idea.

Does anyone here support it or disagree with it?

 

Based on what I've read, diaphragm-style DV's like the one that comes stock on a 1.8T and the 710n should be installed the "right" way. And piston-style DV's like the forge 007 should be installed in reverse. I still haven't found a definitive answer as to why, but i'm still a turbo n00b lol

 

Thank you CCa4, I love you.

Im gonna go switch it around then.

 

The boost will push the piston down harder when reversed, instead of pushing against the spring

 

Wow, it runs good....
and sounds more like a bov then a woosh...

 

Mainly when the boost is pushing against the piston the valve can be open at idle. No problem if its recirculating. But when it's set the other way it releases less. This can cause surge but IMO not enough to ever cause a problem if the valve is adjusted properly. But yes it will also be more satisfying at full boost hahaha

 

So are the springs in the stock and 710N DV's only used for when vacuum is engaged or during boost also?

 

The spring keeps it closed at idle. When you build boost, the air (meaning the vac port on the top) pushes on it more to keep it closed. When you release the throttle, there is no longer that air pushing on the piston and the compressed air thats built up in your pipes will push the valve up releasing the air thats charged in the system. When theres no more pressure in the pipes to keep the spring compressed, the valve sits back down again. Surge is when there is not enough pressure in the pipes to open the valve (or push it up, if you will) and that air trys to escape through the turbo.

 

So which way do you have it installed now and what type of diverter value do you have?

Doug

 

I have a hyperboost diverter valve.
I have the bottom of it facing down, and the pipe that comes out the side going into the intake piping.