Highlights: Featuring AWE Tuning 180 Technology™ Engineered, developed, tested, and hand built in-house at AWE Tuning 2.5" mandrel bent 304 stainless steel tubing throughout Both Touring and Track Editions do not affect or alter any emissions devices, completely street legal 27lbs weight savings with Touring Edition No Check Engine Light -- Guaranteed Lifetime Exhaust Warranty Sound Perfection: AWE Tuning 180 Technology™ As exhaust gases exit the 3.6L engine and flow into an AWE Tuning 180 Technology™ equipped resonator, they pass through strategically located ports, and into reflection chambers. Sound waves, carried by these exhaust gasses, bounce off the walls of the reflection chambers. By controlling the size and location of the ports and the chambers, we also control when the sound waves exit the chambers. The specific timing of when the reflected sound waves re-join the main exhaust flow creates a one-hundred-and-eighty-degree out-of-phase sound wave that cancels out problematic frequencies. More on AWE Tuning 180 Technology™ in the tab above. Details, by edition: The Panamera Touring Edition Exhaust System The more civilized member of the family is the AWE Tuning Panamera Touring Edition Exhaust. If you occasionally have a client in the car, or are concerned about waking the neighbors, consider the Touring Edition: This system brings out the power and tone of the V6 in an extremely sophisticated manner. This system is an “axle back” system that retains the factory mid-muffler, while offering a significant weight savings of 27 lbs. over the factory system. Touring Edition or Track Edition, both AWE Tuning Panamera exhaust systems unlock additional performance and tone – just the kick that the V6 Panamera needed.