The Bosch 3 Bar MAP Sensor is necessary for any Mazdaspeed trying to achieve boost levels higher than 22psi. Since it's not a direct plug in to the factory wiring harness, you'll also need the Bitwise plug-n-play connector. You MUST tune for this modification which can easily done with any professional tuner.
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Bosch 3 Bar MAP - [ Ссылка ]
