MillTek Audi RS6 Active Valve Control (2013-2018) Interior Fabspeed's Catbypass Pipes replace the

Fabspeed's Catbypass Pipes replace the restrictive factory catalytic converters with much less restrictive straight-through pipes for maximum flow and performance

Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified

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Maserati Ghibli ECU Tuning Upgrade

MillTek Audi RS6 Active Valve Control (2013-2018) Interior Fabspeed's Catbypass Pipes replace theActive Valve Control (AVC) is available to support both vehicles equipped with factory valves on the exhaust as well as a growing range of upgrades Milltek Sport offers to have performance exhaust systems with Valve Control. Also with optional App control on selected models, via iPhone or Android smartphone app 's, AVC brings total control of the exhaust to the drivers finger tips, via full CAN BUS integration with built in safety controls, Milltek 's