Mercedes CLA250 Tuning Box Kit Installed with HG Intake VRTuned.com January 19, 2016 Product Info, Tuning Tech Our customer William just got done installing his VR Tuned ECU Tuning Box Kit for the Mercedes CLA 250 2.0L turbo and he is stoked on the performance increase! The Tuning Box plug and play functionality gives the CLA 250 almost 50 horsepower gain over stock while still improving driveability and is warranty safe. Plugging ...
