E67 boost cylinoid control hp tuners.
Does the boost cylinoid modulat to controll boost or is it a on/off cylinoid. I guess what I'm asking can I replace the stock cylinoid with a after market to control boost for a turbo. I look at the e67 pinout and one pin is 12v the other pin is reference signal.
thank you in advance for the help.
Boost cylinoid

