Mercedes GLS450 TCU Tune — Stage 1

AMR Performance develops Mercedes GLS450 TCU software as 2 separate files, not one calibration reused across a range. These cover the GLS (X167), GLS (X166) chassis, each written for that car's engine and gearbox combination. The list includes ECU calibrations and CPC tuning, which can be run individually or together. Installation is comport pro -or- dealer flash or wireless via comport ipro (obd). All current files are built for 93 Octane pump fuel — no race fuel and no hardware changes required. Every calibration listed here ships as a Stage 1 tune; the power figures for each are on its own product page.