Mercedes GLS580 Tuning — Stage 1

AMR Performance develops Mercedes GLS580 software as 6 separate files, not one calibration reused across a range. The list includes ECU calibrations, transmission (TCU) software and CPC tuning, which can be run individually or together. Installation is comport pro -or- dealer flash. These cover the GLS (X167) chassis, each written for that car's engine and gearbox combination. All current files are built for 91/93 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.