NM Eng. Boost Sensor Tap • R-ChassisWere not sure why MINI would not have a boost gauge to monitor boost levels in their S and JCW models, but NM engineering now has a solution to this dilemma. The OEM intake manifold does not have a port to easily get a boost or vacuum reading and as such would require drilling and tapping a hole in the intake manifold. NM Engineerings Boost Sensor Tap installs simply. Remove the OE map sensor from the intake manifold, install our Boost Sensor Tap in