Sounds good, with the load based method I image boost would fluctuate more when ambient temps change right?

 

Can someone put up the correct vacuum tube routing for the stock WGA? The images on the initial post are down. I need to know how to hook up the GM BCS in terms of the hoses before tomorrow.

 

The side that has the single nipple goes to the compressor fitting and the nipple that didnt come w/ the filter on it goes to the wga. I know this isnt a diagram, but should help.

 

 

^that works too.

 

Thank you sirs. You're the effing men.

 

 

Today I have installed my GM Boost solonoid.
I'm a little bit confused abount the ports.
I have checked the flow without power (WGDC =0%) and the air flow from port A to C which was already worked out here.
Then I powerd the solonoid with 12V (WGDC=100%) and check the flow again.
The fow is then between Port A and B. The C Port is closed.

Have somebody changed the lines between port A and C? Maybee the boost can than be a little bit more stable because the pressure is released at port A and not jamed at the port C.

This means also that there is not venting very much air out of the B Port, because the C port closes and so not very much air can went out.

 

Thats an interesting idea Joe, would it actualy make boost any more stable as with the 3 port I never get near 100% WGDC, I hit 1.7 bar at 85% on the stock 7 turbo. Give it a try and let us know.

MB

 

I personally don't think that will help you much at all. If you are sourced from the outlet elbow its basically going to be seeing 100% boost whether it is bleeding it off or not. I would imagine that the only thing this would do is create a small "boost leak" (though still metered if you are going back to your intake pipe post maf).

The real problem here is that your wastegate may not be able to close again if that pressure gets stuck in the line. This is why MBCs have the small bleed hole in the side.

Smoother, maybe... worse, probably

 

My dyno with the GM 3 port bcs , my MBC would never hold psi like this !

The Dynojet loaded the car different , on the street I hit 290-300 load and here I only hit 260 load.

 

How much boost were you able to hold up top at around 7-7.5K rpm? 300 load at 25psi is a bit high in my opinion but maybe its due to the HKS intake messing with the MAF readings? Have you rescaled the MAF scaling by any chance? Nice power btw, damn IX turbo guys got it easy lol.

 

21 psi @ 7k
Could be the intake not done much with rescaling since I got a base flash, use to hit 270 to 220 with MBC 25-19psi .

 

^I usually see 22psi in 3rd gear and 24 psi in 4th @ redline w/ my Gm 3 port setup.

 

EDIT: If you go with the boost targeting setup with a JDM map sensor instead of the load targeting setup you can eliminate that variance a lot more.