[Grant]

The one on the back (there isn't a hose barb in it, just a hole with threads), whats it for? Do people have more luck with it connected, left open or plugged? Also, what thread is it? Its not 1/8" NPT like most of the boost lines.

Thanks,
Grant

 

[Zero4SPL]

You use it when you buy a Greddy Type-R with a stiff spring, With these blow-offs using vacuum won't be sufficient to open it, so you have to plumb a boost line coming from the intercooler piping to the connection that you are reffering to. The hole should be a 1/8 NPT. If a fitting doesn't fit, try tapping it out a little more.

 

[FYRARMS]

With these blow-offs using vacuum won't be sufficient to open it, so you have to plumb a boost line coming from the intercooler piping to the connection that you are reffering to.

I'm confused. The BOV is already sitting on intercooler piping. Is the secondary line just to give the stiff spring some extra "oomph"?

 

[qualen]

When I had both hoses connected the type-R was a lot more responsive. Problem is it would also leak around 15psi, insteat of leaking around 20psi with only one hose connected. I'm not sure if I had the stiffest spring though.