BOOOSSST controllerz
I agree w/ Billy T. I use the INNOVATIVE unit. I have gone a step further and took advantage of the controls for boost settings in each gear.
I use a T-400 w/ a brake. I also use a B&M PRO Ratchet shifter.
I put a micro,[actually the back up lite sw. provided w/ the shifter],
on a mount plate on the rt side of the shifter. when I ratchet up to another gear, the micro is bumped for a split second, [controller requires a momentary 12vdc to change to next gear] and it changes the boost to the level set on the controller.
Therefore: I have control of boost when on the brake, then to low gear,[GREAT for the street!!], then to 2nd, then to 3rd.
The ramp feature is also great on the street.. you can control how fast the boost comes up so the tires stay on the wheels!!
It AIN'T cheap!!

Bout $500. Has poor install kit w/ it.. no small hose barbs for plumbing. Instructions are good.
I made a plate that fits under the radio console and is powdercoated wrinkle black. Easy to see & set. Takes some time to wire and install. Has it's own MAP sensor, so it corrects for baro automatically when you key it up.