I have a new in box HDI boost controller for sale. My friend has one and it is awesome. Anyone would be happy with it especially for the price. It is made specifically for these cars. It is a SBC-D-RX model. I am only selling it because I no longer have my wrx. I never installed it but they are amazing.It has in-cabin boost adjustment, full time closed loop boost regulation, fast target boost locking, built in Boost Cut Lift Function, minimizes turbo spooling time, dual boost adjustment so u can go to low to high boost with one button, and over boost function. Selling it for 140 + shipping. This is actually real cheap for a boost controller as good as this.