Armytrix Complete OBDII Wireless Valvetronic Controller w SolenoidFREEDOM TO SWITCH BETWEEN LOUD AND QUIET WITH THE PUSH OF A BUTTON With the push of a button on your ARMYRIX remotes or smartphone application, you get to switch between modes upon your wish. CUSTOMIZEABLE AUTOMATIC MODE GIVES YOU A WORRY FREE DRIVE The automatic mode will open close the exhaust valves based on predetermined RPM range or turbo bar, so you dont have to manually switch all the time you can also customize your own automatic mode upon