If you own a VAREX-equipped XFORCE exhaust system, or you’ve fitted one of our VAREX-equipped cut-out kits in your custom exhaust setup, unlock it’s full capability with the VAREX Smartbox. Easily installed with the supplied OBD interface and wiring loom, Smartbox gives you access to the latest features and functionality via Bluetooth connectivity, using the XFORCE app. Adding this pairing gives you access to advanced customisable functionality with options such as geographically tagged opening / closing of your exhaust valve automatically, mappable exhaust valve control based on OBD data-stream outputs (vehicle speed / revs / throttle position) and a whole lot more besides. The smart choice when it comes to taking your exhaust’s sound and performance to the next level. Precise manual adjustment of VAREX exhaust valve positions Custom pre-set of VAREX exhaust valve position Tune the VAREX exhaust as fine as 1% increments Automatic control of VAREX exhaust valve positions based on real-time information of RPM, throttle, and speed Automatic control of VAREX exhaust valve positions based on the real-time GPS location of the vehicle