Fabspeed Porsche 958.2 Cayenne Turbo / Turbo S XperTune Performance Software (2015-2018) 971 Active Valve Control (AVC) is

Active 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

Using our 25+ years of air and water-cooled experience

With its wider eye opening

the software helps you optimize engine performance to utilize these upgrades fully

Fabspeed Porsche 958.2 Cayenne Turbo / Turbo S XperTune Performance Software (2015-2018) 971 Active Valve Control (AVC) isAchieve maximum power from the Porsche 958. 2 Cayenne 4. 8L Twin Turbo V8 engine without sacrificing driveability or reliability by optimizing the engine's performance. Easily flash your Cayenne with a Fabspeed ECU Tune utilizing the included handheld device. COMPATIBILITY Fits all Porsche 958. 2 Cayenne 4. 8L Twin Turbo V8 Vehicles (2015 2018) POWER GAINS Cayenne 958. 2 Turbo Stock = 520 HP 553 TQ Tuned = 640 HP 701 TQ Cayenne 958. 2 Turbo S Stock =