Mercedes E550 4.7L Bi-Turbo Tuning Box Kit Feature VRTuned.com January 25, 2016 Product Info Our customer Charles just juiced up his daily Mercedes E550 cabriolet with our VR Tuned Tuning Box Kit. The ECU Tuning Box is a plug and play box that takes the stock 4.7L Bi-Turbo from 408bhp to 480bhp!...
