Purging the air out of your nitrous line allows harder launches and quicker 60ft times, which in turn, can shave up to 2 tenths off of your quarter mile ETs. This NX Purge System includes a Lightning purge solenoid, push button, vent tube and a 1/8npt to 1/8npt fitting which allows you to connect the purge valve to the bypass/purge port of NX lightning and NX iceman solenoids.