Grimmspeed Boost Control Solenoid - MazdaSpeed3 - 057028 Wheels A core problem with most

A core problem with most countersunk knobs is that they don't fit well to the shift boot

X-Series Digital Gauges include new technological features that make them easier to use

Lift the hood halfway and you'll find a generous neutral zone

0 Turbo *without DCC*

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Grimmspeed Boost Control Solenoid - MazdaSpeed3 - 057028 Wheels A core problem with mostThe GrimmSpeed MazdaSpeed3 Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will not reduce the life of your factory computer because it is designed to draw the same amount of power as the factory BCS but flows better and reacts faster. It plugs in and requires no splicing or soldering of resistors. With the included bracket you can bolt it in, plug in the connector, and start tuning for fast boost response,