Turbosmart manual boost controller

Most manual boost controls have a little bit of a problem. They'll allow a little spike before they settle down to the set boost level. Not this one - in our testing, the boost rose directly to the target boost level and stayed there. When you're setting the boost, there's no guessing - the knob clicks into different settings and the controller is even well labeled so you know if you're increasing or decreasing the boost. It's very easy to use.

As with any boost controller, this can only raise the boost level from what's allowed by the wastegate. It can't lower it.

As used in our FM II turbo systems and in our Mazdaspeed intake upgrades. Sorry, the little toy car is not included!