Map Finder

What the scan checks

Map Finder tests each possible byte offset as the start of the selected rectangular window. Every byte must fall within the chosen minimum and maximum. Optional filters require at least one pair of identical rows, non-decreasing or non-increasing values within every row, or both. Results are ordered by offset and capped at the first 50 matches; there is no ECU-specific classification or confidence score. With the default full byte range and no optional filters, every full-size window matches.

Interpret candidates carefully

A candidate is only a byte window that meets those selected rules. Its offset is relative to the supplied data. Preview or send a candidate’s values to Map Viewer for inspection; the Viewer receives the values and shape but does not retain the original file offset. You can also pass values to Map Extractor to check a selected table’s shape. Neither step confirms map purpose, axis meaning, compatibility, correctness or safety.

If no candidates match, the scan did not find a window meeting these filters; it does not prove there are no maps. Try another shape or filter, or inspect known regions directly with Map Viewer. Source bytes and selected files are processed in this browser and are not uploaded.

Related learning

Working with Raw ECU Files introduces byte-level file structure. Use this tool’s candidates as exploratory starting points only; independent technical evidence is needed to establish what a region means.