What is wrong with my boost controller?

[RaseR]

Hey guys,

A technical question!

I bought my R32t with a custom dual stage bleed valve setup, looks like it is the one sold by Promaz (see attached pics), initially it allowed 12psi on low boost and 16psi on high boost.

Since then I've removed an atmo venting HKS BOV (now std BOV only) and changed to an Apexi Power Intake pod filter. After doing this I've found that high boost mode no longer limits boost, it basically allows the turbo to make infinite boost (not good!), low boost has increased slightly with the install of the new pod to 12.5-13psi but is otherwise unaffected.

I've tried emailing Promaz asking for details on how the system works, but had no response, so I've drawn & attached a diagram (plz excuse crappiness!! ) of the setup to see if any of you have any idea what the problem might be and how it could be rectified.

A brief description:

.When I flick the in-car 'high boost' switch, I hear the solenoid click and using a multimeter I've confirmed it receives 12 volts at that point, so that seems fine.

.The bleed component of the system is 1/8" Festo valve, I haven't wanted to mess with it too much just in case something goes completely wrong, but I've tried adjusting the bleed screw a few inward/outward turns and it hasn't affected low boost mode at all?

.The Promaz website states 'the boost level is adjusted by the size of the bung and more accurately with the top mount adjusting screw'. Where would the 'bung' be in this setup?!

I don't fully understand how this boost controller can provide two stages of boost higher then factory.....The car has an upgraded steel-wheels R32 turbo, I thought maybe it also has a custom actuator, but the boost drops back to 10psi at high RPM, suggesting this is not the case.

Any help will be much appreciated!

Thanks,

Dave.