im about the install my drag kit and it came with a greddy bov. i noticed that it has 2 lines. i know im suppose to hook up 1 line to a vaccum source, but where does the other line go? please help me out guys. thanks

which line goes to what?

thanks

 

vacuum source goes to the top port, bottom is left open.

 

thanks......y is it left open?

 

Here is an explantation of the lower nipple for the Greddy Type S....

The GReddy valve has two fittings for small vacuum lines on it. The top fitting is for the same hose that went to the original stock bypass valve, the hose that goes to the intake manifold. The lower fitting is normally left open. It is a vent for the lower chamber of the valve.

On some cars with large turbos, compressor surge at light throttle lifts can be further reduced by connecting the lower fitting to a pressure source. Typically a fitting is added to an I/C pipe between the turbo outlet and the valve.

Here is a nice pic that can help explain.




[Modified by DeepSi, 5:03 PM 2/25/2003]

 

ahhhhhhh..........ic

thanks for the info

 

thats a great diagram