Re-circ valve

[quattro]

Just out of intrest, open, closed or both which do you run on your S2.

[Rusty]

Forge 007 been in there for 4 years with no problems.

Have also run GFB Stealth (variable split BOV / recirc.)

Can't really beat a 710N for reaction, shame they don't last long. APR R1 is better but hard to find and £££

[A80Avant]

i run x2 apr R1 but i sort of recirulate by bringing hoses towards the air filter. Dont know if it makes a difference, but there was no room for recirc.

[newsh]

Forge 007 recirc and Bailey recirc

[EspenW]

Forge 007, reversed.

[Rusty]

By 'reversed', do you mean that the high pressure is acting radially on the piston (outside face) rather than axially (bottom face)? IME, the valve sounds different depending on which orientation it's in, I think I have it with the high pressure acting radially, it makes a 'woosh' like OE, rather than a metallic 'chink'. Will need to check...

[EspenW]

By 'reversed', do you mean that the high pressure is acting radially on the piston (outside face) rather than axially (bottom face)? IME, the valve sounds different depending on which orientation it's in, I think I have it with the high pressure acting radially, it makes a 'woosh' like OE, rather than a metallic 'chink'. Will need to check...

High pressure axially. Holds a lot more pressure that way.

[Jonas_R]

Running a Forge 006 for serveral years now also have a APR R1 lying around but not fitted yet

[M_GORDON]

Running a Forge 007 for serveral years now also have a APR R1 lying around but fitted HAHAHA

[A80Avant]

forgot to mention going from 006 to APR i think its better

[Jamo]

Best of both worlds

[A80Avant]

funny you should say that, the forge equivalent to that was working only for low boost applications. After 1.5bar or something i thought it was too soft. maybe the turbosmart is a bit better

[Thuppu]

[IMG]Best of both worlds

The split valve maybe works with Vems, but with Motronic you should only use a closed recirc valve. I have tried a Forge split-r valve but have to use it closed in recirc mode to get the engine work properly. With a cone intake filter the "woosh" sound is not smaller at all with a recirc valve like 710N.

[Rusty]

Best of both worlds

As it's not adjustable for % recirc / atmospheric, I'd say not. However, this bad boy definitely is



Quality of the GFB valve is something to behold, there are some really solidly engineered features in it, only downside is that it would affect the weight distribution of the car! As mentioned before, being able to adjust the vent to atmosphere aperture means that you can have a small proportion going outside and a large proportion back in, this means that the usual AFR affect is minimised and TBH I couldn't really tell that it was there, other than the noise.

[Jamo]

As it's not adjustable for % recirc / atmospheric, I'd say not. However, this bad boy definitely is

Quality of the GFB valve is something to behold, there are some really solidly engineered features in it, only downside is that it would affect the weight distribution of the car! As mentioned before, being able to adjust the vent to atmosphere aperture means that you can have a small proportion going outside and a large proportion back in, this means that the usual AFR affect is minimised and TBH I couldn't really tell that it was there, other than the noise.

erm It is adjustable, you turn the top, notice the arrows on top of the valve in the pics which indicate the adjustment