Originally Posted by Omniscient
In order for the wastegate to work you must have the compressor reference port hooked up to the compressor side of the turbo, if you don't have this vacuum line attached than the boost pressure will not be limited to the set spring pressure; it will build unlimited boost pressure until your engine is destroyed.
I guess I'm just a little confused.
So the nipple on the compressor side creates a vacuum? And basically the same vacuum you can get from the manifold?
vacuum is neg. pressure, boost is pos. pressure. So it's ideal for your wastegate to know the correct manifold pressure. What I needed to clarify from last night's post is that if you're running a mechanical bleeder valve (non-electronic boost controller) then run it to a single port, I would prefer the side port. Reason why to run the electronic type to two ports is when you turn off your boost controller, you'll still have the wastegate to pop open at the preset spring psi rating.