I may have tossed mine in the trash a long time ago, but some recent digging (I know it was done on 3si circa 2005) got me to look-up cheap EBC.
While I was looking over some 1JZ vvti pictures and noticed that there is some type of control valve right above the 'expansion chamber' (blue plug)
It does seem to fit the 3 nipple boost solenoid feature, with a 2-wire type switch.
For those that still have it, what does it actually do in OEM/factory setup? Is this to 'bleed-off' excessive boost and bypass the DV?
The idea is to hook it up as a proper boost solenoid:
And use the EMU to control the duty-cycle and get full wastegate (0%) or full boost (100% bleed) on it.
Thoughts?