Cobb Tuning 3 Bar MAP Sensor Upgrade Kit - Porsche 911 Turbo 997.1/GT2 997.1/GT2RS 997.1The COBB Porsche 3 Bar MAP Sensor Kit is a direct replacement and allows you to read boost beyond what the factory sensors can measure. With the factory sensors limited to around 22 psi, the COBB 3 Bar MAP Sensor Kit will allow accurate measuring up to 30psi. Why? The COBB Porsche 3 Bar MAP Sensor Kit allows you to read boost beyond what the factory sensors can measure. With the factory sensors limited to around 22 psi, the COBB 3 Bar MAP Sensor Kit