You know with the right configuration you can run as low springpressure as you want but still acheive high boost. Read up on 4 port boostsolenoids and about using 2 3 ports. (It will do the same) Only problem with you going with a 4 port is that they generaly need to be operated with a lower Hz that a 3 port due to heavier piston mass. Around 10Hz vs around 20Hz. Since you run an aftermarket BC that would not be adjustable in your case.