Greddy Type S BOV

[booosting92tsi]

I just replaced my 1g bov with a Greddy Type S BOV. I connected the upper nipple only.
Where do I connect the lower nipple to???
Is it true if i leave the lower nipple disconnected, the whole over all system will operate slower and quieter than that if i connected it???

For performance sake, is it better to take advantage of the lower nipple and connect it?? is there a major difference if i connect it or not???

Also, it it true that the soft & hard adjustment screw, can only be adjusted if i connect the lower nipple, i heard if i leave it disconnected, adjusting the screw won't do anything.

 

[Stock]

You will be fine without it.

The upper nipple is for vaccum, the lower is for boost. It's for better/quicker responce, I believe...

 

[PaleDSM]

The lower nipple doesn't have to be used. If it is not you can just leave it open. It is there so that you can run some positive pressure under the diaghram to help it open quicker under low boost lift. If you are getting some compressor surge at low boost lift you can try it out.