This tune is for the CLS550 – 5.5L/M278
Our in-house team of engineers is eager to ECU tune your CLS550 – 5.5L/M278 platform. This ECU tune can make your already impressive CLS550 – 5.5L/M278 into a literal street monster. Increases in horsepower, torque and throttle response will leave you with a smile on your face. You will be wanting more every time you get behind the wheel!
Our expert team of technicians has vast knowledge working on theCLS550 – 5.5L/M278. We have re-calibrated many of the factory ECU settings giving your CLS550 higher performance while still remaining daily drivable & street legal.
SMS offers stage one and stage two for this vehicle. Please contact your local SMS location for more details!