RomRaider

This is a modification of ride5000's hybrid MBC/EBCS setup for use with dual-port EWG. Hopefully someone will find this useful as there is not a lot of info for setting this up (I found nothing actually).

Pros:

Same basic pro's as the original single port method, except, depending on WG spring you will have much greater range of adjustment.
You get to use the top port.
Boost shouldn't fluctuate as much, as both ports are fed from separate boost sources. (In theory anyway)

Cons:

Need to tap for a second boost source.

Basic setup using modified Grimmspeed EBCS (1/4" barbs) and 6mm vacuum lines:

Fisrt boost source (turbo nipple) goes straight to SIDE EWG port.
Second boost source (I tapped intercooler) goes to EBCS port 1.
EBCS port 2 gets teed to TOP EWG port AND MBC input (the port on the end).
EBCS port 3 gets vented (I used sintered filter).
MBC exit port gets vented (the port on the side).

I don't understand why you pick up the boost line from two different spots that are not terribly different. Your blue line might as well just be sourced from a T on the black line and the compressor cover. Picking up another almost identical source of boost won't make much difference after you retune.

one possible advantage to the locations i can see is that the blue line is post IC, which will mean that the requested boost pressure will be compensated for pressure drop across the core. of course the bottom ewg port (black line) could be sourced there also, and it shouldn't offset readings because there's basically no flow rate through that hose.

I had a lot of boost oscillation when I had it plumbed that way. The volume of air in the hose wasn't enough to dampen it. Moving the second source farther down increase the volume of air between the two, which made the oscillation a non-issue. Hope that makes sense.

off topic a little but see with your giant intercooler core, which undertray do you use on the scoop or have you taken it off completely?

I had to fab one up out of rubber strips. I'll be moving to an air/water setup soon.

any pics of your strips?

I bought a splitter and bellows and it didn't fit (The Hyperflow is HUGE), I ended up cutting the bellows to expand the area that it covered and joining the pieces with rubber strips to keep it sealed. You can tell from the IC pics, there is still a lot of the IC that is covered by the bellows.

Considered using a MAC 4 port?

http://pics.fullavit.com/4port/diagram.png

May look into it when I get the AWIC setup. Rather not plumb the second port like I have now.