Greddy Profec B Spec II for WRX STI CAR



The Profec B has long been a favorite boost controller for its simplicity and effectiveness. Now the Spec II improves on the original design.

As always, boost control is simple as a twist of a knob, with a high and low setting. A new backlit LCD display shows current boost -- and it reads in PSI! (Or KPa if you want).

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