if you need a boost controller id buy a big solenoid Blitz one over the rest. HKS like trying to setup a fighter jet. Greddy Little complicated but with the instructions easy enough. Apexi Avcr grand though like (every apexi item~safc neo blah) it has so many options that you wonder just what they were thinking. Big ol blitz yoke is the ticket, simple and rocket solid with the big solenoid, so long as you dont have boost issues elsewhere in the car. Or just be awesome and use a standalone. Phil