MHD Tuning Files
Custom MHD Flasher calibration files and revision support for approved workshops tuning BMW over OBD — N54, N55, S55, B58 and more. Built from the stock read and your data logs, for off-road and competition use.
Custom MHD Calibrations, Built to Your Data
MHD Flasher tunes BMW ECUs over OBD with no bench required, which makes it a fast, accessible platform — but a custom calibration still has to be built for the specific car and verified under load. We develop the map from the stock read and your declared hardware, then refine it against your logs. For matched gearbox work on the ZF automatics see TCU tuning files; for the broader process, ECU tuning files.
Custom maps
Built for your turbo, fuel system, intake and fuel — pump, E-blends or race fuel — not a generic OTS file.
Revision support
Revisions from your logged boost, AFR/lambda, timing and knock until the map is stable across the range.
Map slots
Where supported, multiple map slots for different fuels or states of tune.
Tuning BMW with MHD?
Register your workshop to submit reads and have the calibration developed and revised around your data.
