Manual Boost Controller in parallel diagram

[salz2135]

Does this diagram illustrate a manual boost controller set up in parallel to the n75?









If so, can someone show me the direction of flow?

TIA

[GarbatyA4]

Looks like it too me... nice find!

[salz2135]

what is the flow direction from the manual boost controller?

[akielb]

my guess would be that boost is coming from the turbo - since this is a boost and vacuum system - I can't give you a "flow" direction since its flows both ways

on another note (and I'm not sure if its covered in the "how to install a MBC thread) - what is the gain of doing this over just ordering a N75H

[salz2135]

there are arrows on the MBC indicating a flow path. do the arrows lead to the wastegate T fitting or the turbo house T fitting?

a MBC in parallel with the n75 is done to prevent boost spikes. the MBC will bleed off the excess while the n75 still "controlls" it.

[akielb]

arrow's go towards the wastegate. check out this side they have a few different diagrams and instruction sheets - just scroll down to manual
http://www.turbosmart.com.au/index.php?s=downloads