ATX.

Just wanted to say that I am impressed with the GFB boost controller. I have model 2 and it is in fact a fully closed loop controller. Set duty cycle, make a few runs and it logs the max boost as the target value. Then set gain for spool up and sensitivity for target correction. Have a scramble high boost button wired in for when I really wanna get squirrelly.

The boost transienst after getting gain dialed in is absurd, I fear for mechanical failure, but spinning tires in 3rd at 50 mph on 225 Rivals says good things about the power transient at 16 psi.

Just wanted to throw my experience out there to anyone who might be on the fence. I know MS can control boost, I used it for a while before deciding I wanted something with a digital interface. The solenoid appears to be of even higher quality and overall the unit seems well built. Very happy to finally start making different boost profiles.