Hallman Pro Manual Boost Controller, Purple - PRO-04 Ignition Coils The GrimmSpeed™ MazdaSpeed3 Boost Control

The GrimmSpeed™ MazdaSpeed3 Boost Control Solenoid is designed to work with your factory computer (requires tuning)

Clutch Disc: 6240227

COBB Aggressive and COBB High Torque Aggressive maps increase the auto shift limit to a maximum of 7400RPM

Tethers adjust in length out to 20"

Hallman Pro Manual Boost Controller, Purple - PRO-04 Ignition Coils The GrimmSpeed™ MazdaSpeed3 Boost ControlOur new Hallman Pro kit contains our new Hallman Pro valve. The new Pro valve is machined out of billet aluminum and stainless steel pieces. The new design of the valve incorporates some great new features not currently available on any other manual boost controller. We have designed the Pro valve to not require the use of a lock nut or any type or allen wrench(s) to be able to adjust your boost. Simply turn the adjustment knob and it stays. Another