Choose the vehicle version to be reprogrammed.
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Looking for a high-performance tuning file for the Denning School Bus? At OLSx, we provide custom ECU remapping files specifically tailored for the School Bus. 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 Denning School Bus.