11-10-2000, 04:26 PM
There are three nipples on the valve. One goes into the intake pipe, one goes to the wastegate actuator, and the other goes to a nipple on the outside of the turbo.
Can someone explain to me how this device functionally works?
11-10-2000, 04:54 PM
The turbo line is the same as the manifold pres. Except its taken at the turbo.
The line to the airbox is the vent line.
The line to the wastegate feeds the wastegate diaphram.
Esentialy what the valve does is controls the amount of boost that the wastegate gets..
If you pull the line off the turbo, boost will continue to build to a dangerous level. you have just disabled the wastegate all together.
If you where to take the valve out so its not in line you would make Low boost 3-4 psi as the wategate has a soft spring.
So.. The valve controls the amount of pres that feeds the wategate. Less pres means the wastegate will not vent as much and the turbo will make more boost. If the valve is open it then more pres will hit the wategate and the turbo will make LESS boost..
The valve is just a super fast electronic valve controled by the ECU. Your DBW car as a few boost sensors as you know. If the ECU calls for more boost it closes the valve a bit.
Hope this helps.