Modular Vortex System Dynavap Tip and Cap NOT included. The MVS has many configurations. Please choose your setup. Built for Performance Our patent pending Modular Vortex System has been thoughtfully designed to give you the most control of your airflow. The sleek two-part titanium stem now has two airport configurations, with all the wiggle room in between. The top half houses a standard fully open airport AND the new dual turbulent airport. Rotate the bottom half of the stem to adjust airflow as needed with our signature teardrop airport to curate the perfect hit. And don’t forget to flutter the airport to really get the best pull.  Modularity at its Finest The core of the MVS is our Simrell Stinger – intercooler, mouthpiece and a telescoping condenser.  Made to be adaptable to any OEM or aftermarket DynaVap stem, the Simrell Stinger was originally designed to be used with our two part Vortex Regulator stem. Unlike Stingers released prior to the MVS, which were machine finished, the Stinger is now hand polished to match seamlessly with the Vortex Regulator finish.   Even Easier to Clean & Maintain The MVS is as easy to clean as it is to put together. Disassemble, remove intercooler from Stinger and soak all the parts in ISO. Rinse clean and dry before putting it back together.