Rock2610d
Proven Member
- 255
- 4
- Jan 22, 2013
-
Cheyenne,
Wyoming
Well since the OEM 2G has an orifice in the vacuum/boost line going from the turbo to the "T' fitting I decided to play with it a little, since I just put on a s16G. System still utilizes the factory EBC solenoid.
With line to WG actuator disconnected and plugged I got 18 psi at 4K.
With the line hooked up with no orifice installed I get 9 or 10 psi at 4K.
With a 3/16 inch orifice in the line from turbo to "T" fitting I get 12 psi at 4K.
With a 1/16 inch orifice in the line from turbo to "T" fitting I get 15 to 16 at 4K.
So, here is how I did it....
Using the plastic leftover parts that are cut off the top nipple of 75W 90 oil containers I drilled a 3/16 hole in one and a 1/16 hole in another. It needs to be cut off big enough that it fits pretty tight inside the vacuum line. The tip end needs to face the boost pressure....E.G. the turbo side of the vacuum line.
Push the drilled plastic nipple into the line that taps boost pressure. In my case it was on the inter-cooler piping. With a T-25 it would be put in the line going to the "T" fitting to the compressor housing.
Remember if you still have the factory orifice to remove it.
Cost was $0.00, takes a few more minutes to install and remove than a commercial unit but works just as good. The cost is pretty good too
With line to WG actuator disconnected and plugged I got 18 psi at 4K.
With the line hooked up with no orifice installed I get 9 or 10 psi at 4K.
With a 3/16 inch orifice in the line from turbo to "T" fitting I get 12 psi at 4K.
With a 1/16 inch orifice in the line from turbo to "T" fitting I get 15 to 16 at 4K.
So, here is how I did it....
Using the plastic leftover parts that are cut off the top nipple of 75W 90 oil containers I drilled a 3/16 hole in one and a 1/16 hole in another. It needs to be cut off big enough that it fits pretty tight inside the vacuum line. The tip end needs to face the boost pressure....E.G. the turbo side of the vacuum line.
Push the drilled plastic nipple into the line that taps boost pressure. In my case it was on the inter-cooler piping. With a T-25 it would be put in the line going to the "T" fitting to the compressor housing.
Remember if you still have the factory orifice to remove it.
Cost was $0.00, takes a few more minutes to install and remove than a commercial unit but works just as good. The cost is pretty good too
