Some Information On The HKS EVCIII

The unit features two preset level buttons (High and Low), a SBC button, which can be set to increase the boost for a specific amount of time in seconds, a warning indicator which goes off when a preset boost limit is exceeded (once this is triggered the unit will only allow wastegate boost pressures), a digital display, which shows red in normal mode, green when the power is off and amber when using the mode button for making settings. The display shows, manifold pressure in mmHg (vacuum) and kg/cm2 (boost) in either the normal mode or when the power is off. The High and Low will show green for the one that is off and red for the one that is on, ie if you are on the High setting, the button will be red, and the Low button will be green, should you change to the Low setting the colors will switch. The unit can control boost pressures up to 2.0 bar (approx 29.5 psi).

Here I will try and explain some issues relevant to the install of the EVCIII on a ST185, which will be helpful with the installation of almost any electronic boost controller. First it is important to know that the ST185 has an internal wastegate setup, which will determine the setup you choose from the installation manual, as well as determining that the wastegate type selector switch on the back of the unit is set to the correct position (SW). Another thing that will have to be done, is to block off the nozzle on the wastegate actuator that leads to the turbo VSV. When you look at the wastegate actuator you will notice that instead of only having one hose leading back to the intake side of the turbo, it has two hoses, one leading to the turbo intake side and one leading towards the back of the engine. For the one leading to the back of the engine you will have to block this off at both ends, see the diagram.