WDRacing wrote:The boost reference point for the wastegate is the one on the side. The top is a customer vacuum source, so you can run a boost gauge or whatever off of it.
Hmmm... never heard of that. Wouldn't this cause problems with the wastegate opening?
Quote » The line from the turbo will work just fine, you want the vacuum hose to be as short as possible.
When you get a boost controller, it connects in between the turbo and the wastegate. Hope that helps...
WD [/quote]
Anyway, the side port is the boost signal. It's best to connect it near the compressor outlet. Some of the turbonetics turbos have a port for it on the compressor housing, but I'm guessing the 300zx turbo hasn't. Wasn't it internally gated?
The top port is used with electronic boost controllers. The signal for this is taken near but before the TB and routed to the top port through the EBC solenoid. If not using an EBC then leave it open.
If using a manual boost controller then yes, the controller goes inline to the side port.