John Deere Harvester S Chiptuning File Service for Professionals

Stage 1, Eco and Performance Tuning Files for the John Deere Harvester S

Looking for a high-performance tuning file for the John Deere Harvester S? At OLSx, we provide custom ECU remapping files specifically tailored for the Harvester S. Whether you're targeting a Stage 1 power upgrade, an Eco remap for fuel savings, or a full Stage 2 setup, our configurator gives you instant access to dyno-tested, tool-compatible files. All files are compatible with major tools like Autotuner, Kess, and Ktag. Trusted by garages and professionals across the world, our service ensures fast, secure, and precise tuning for the John Deere Harvester S.