Modern day boost control systems rely on both mechanical and electrical systems to control boost. The main electronic component is the ECU, which drives an electro-mechanical device that controls the wastegate actuator. Besides the ECU being an important electronic device in controlling boost, the most important part is that electo-mechanical device also known as the boost control Solenoid. In most turbo applications a solenoid is used to bleed boost pressure off the hose that actuates the wastegate actuator. In these applications the boost control solenoid has 2 ports, and in and an out. The PERRIN EBCS can be setup like the stock solenoid, to "BLEED" boost from the system, but that is not where the EBCS has its advantage. The PERRIN 3 port EBCS can be setup to "block" pressure from getting to the wastegate actuator. This makes for a more responsive turbo and for much better boost control, not to mention higher boost levels are possible with proper tuning. In this case 3 is better than 2! In some cases the EBCS can work with your stock programmed ECU, but to use the EBCS to its fullest, a reprogramming of the ECU must be done. Now a day, this is no big deal and is something that can be done with nearly any car. The EBCS also works very well when using stand alone type ECU's where adjusting of boost tables are possible. Also the EBCS can be used to replace a worn out, or damaged aftermarket solenoid used in a standalone Electronic Boost Control system. In these cases the EBCS will fuction the same, but cost half of a replacement part. Now included with each PERRIN EBCS is a female harness plug, that plugs right into many OEM wire harnesses. This means no cutting of wires, just simply unplug the OEM one, and plug ours in! Simple as that! Along with this convenient plug we include a set of instructions to show how to install the EBCS in nearly every type of turbo application out there