HKS F-Con Accessories (4299-RA008) Option Press Sensor Super Wide Range, For F-CON SZ/iS/F-CON V Pro, Required to use F-CON V Pro to Control D-jetro, Negative Press Range is Based on 760mmHg Atmospheric Press Press Range : 13.3kPa-400kPa(-600mmHg*3.0kgf/cm2)