i have one
Starting off at entry-level, "the HKS EVC Ez is designed to provide precise boost control at the touch of a knob". Boost pressure is adjusted via a variable resistor type knob, so it's extremely easy to set up and use. The Ez then utilises a Fuzzy Logic controlled stepper motor type operating system (which controls up to 2.5 Bar) and is compatible across both internal and external wastegates. Boost pressure is not displayed on the HKS Ez, so an external boost gauge will be necessary for calibration. The ancestor of the HKS boost control range is the EVC. This device features Fuzzy Logic boost control, a stepper motor control system, adjustable duration Scamble boost, push button high/low boost, adjustable over-boost protection, an LCD display for real-time boost/vacuum, automatic altitude compensation and it is said to have extremely high accuracy (to 0.01 Bar). Just to be safe, it can also be locked to prevent inadvertent boost alterations.
here is a real picture of it only want $250 includes everything even delivered to you..