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 3AN tee which allows you to connect the purge valve to plates with integral solenoids (3 Valve Ford Plate & single piece GM MAF systems).