B+ -         Battery Positive Voltage BAC -      ByPass Air Control BAP -      Barometric Absolute Pressure Sensor BARO -   Barometric Batt. -      Battery BCM -     Body Control Module BHP -      Brake Horsepower BMAP -   Barometric Manifold Absolute Pressure Sensor BOO -     Brake On-Off Switch BP -        Backpressure BPS -      Barometric Pressure Sensor BPT -      Backpressure Transducer BSI -       Body System Intergration BTDC -   Before Top Dead Center