XFORCE ESFRS16VKCS cat back exhaust Varex muffler with valves Ford Focus RS Mk3 2.3 EcoBoost (without smart box)

Xforce offers a range of uniquely engineered and designed stainless steel bolt on exhaust systems. Theses exhaust systems bolt directly to existing mounting points making installation easy. They are built to perform well, with materials designed for longevity and like all Xforce exhaust systems they look great! The unique header design increases power throughout the rev range, while providing a great engine audio note – make it roar! VAREX mufflers utilizes the patented technology to combine both the design technology of the stock muffler and the performance muffler into one single compact unit.

• Cat back system
• 3″ matte finish stainless steel pipe work
• Varex rear Muffler in polished stainless
• 4.5″ double wall tips

What is the smart box?

• Varex Smart Box is a control device with patent-pending technology that let the user to manually and automatically adjust the exhaust sound level of the Varex exhaust.
• The users can operate and make a change to the settings of the Smart Box via an elegantly designed Smartphone App.
• The connections between the Smart Boxes and the smartphones are via the latest Bluetooth® technology, which provides an exceptionally reliable and smooth user experience.

Smart Box provides the following functions:

• Manual mode:
• Precise manual adjustment of VAREX exhaust valve positions;
• Custom pre-set of VAREX exhaust valve positions;

• Matrix mode: (WORKS only WITH VEHICLES EQUIPPED WITH OBD-II)
• Automatic control of VAREX exhaust valve positions based on real-time information of RPM, Throttle, and Speed.

• Geo mode:
• User can define a region on the map and then set a particular exhaust sound for location by dragging a circle on the smartphone screen. Multiple regions are allowed to be set and memorized.