it is a 2 wire solonoid & verry responsive
I will look into seeing if it can be put into a subaru but they are verry relyable I recently did a 410BHP viggen using all the stock engine management accept the injectors & the solonoid works flawlessly
I read that boost controll is hard to work out on these cars & have seen ECUTECH cars with manual boost controllers on them which was recomended by the tuner
I think the best possible thing is to have the ECU in controll of boost so that boost can be dumped if pre ignition occurrs & am not a fan of MBCs
Ive seen the one used by subaru & these types have been used by japanese OEs for mostly emissons purposes for eons & are prone to failure
I wanted to say thanks to colby? is this his website? in my expierence as a tuner information is verry hard to come bye & its realy nice to see folks helping each other out with this this is an awesome resourse
take care
JAK