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- CLS53 AMG | C257
Acceleration timers (0-60mph/0-100mph/60-130mph)
Since there are various turbo upgrades available for the C63S we have also catered a specific solution for larger turbos
Sedan version available
BMW Z4 35i E89 N54 BMW Z4 LCI 35i E89 N54 BMW Z4 35is E89 N54
BMW Exhaust Valve/Flap Controller c63coupe - CLS53 AMG | C257Valvetronic Designs is proud to now offer our exhaust controllers for use with most BMWs. This small plug and play unit connects into the factory wiring harness and allows the driver full control of the exhaust valve whenever they want. For too long enthusiasts have had to pay too much for command of their exhaust. We solve that issue. These controllers connect to the vacuum solenoid in the trunk to provide the driver control over their exhaust flap.
