LTEditor is Llandow Tuning’s free browser-based ECU map and hex editor. It works with ECU files in a saved project, combines supported automatic map discovery with user-defined maps, and retains the original alongside saved versions. A free account is used to save and return to projects.
Map editing and definitions
For supported files, LTEditor can discover maps and show them as tables and graphs. The published coverage describes built-in discovery for VAG Pumpe Düse applications using EDC15P, EDC15P+ and EDC15P6, among other listed variants. Coverage is file-specific; a family name alone does not guarantee that every map or function is present.
Users can create scalar, curve and table definitions by specifying addresses, dimensions, data types, byte order, axes, units and scaling. The editor also accepts supported CSV, XDF and A2L definitions. Review imported definitions against the binary: the editor can display the supplied interpretation, but cannot make an incorrectly matched definition accurate.
Hex editor and versions
The hex editor supports address navigation, byte searching and 8-, 16- and 32-bit views. It can show changes against the original and create a map definition from a selected region. Saved versions and definition revisions help keep a record of what was changed.
Cost, checksums and ECU access
The published service is free, with no paid tier or per-file credits. Editor downloads are marked “Checksum not calculated”. The separate checksum corrector can check and correct supported files; coverage must be checked independently. LTEditor edits uploaded files and does not replace the hardware needed to read or write a vehicle ECU.
Open LTEditor projects · Open the checksum corrector