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03

Lua scripting

Edit, check and write the ECU's Lua script.

For rusEFI and epicEFI: an editor for the script the ECU runs, a Lua 5.4 syntax check that reports the same line and message as the ECU's own loader, and read and write over the same verified path as the tune.

Editor

Line numbers, apply to tune with undo, open and download .lua files. Shown when the loaded INI declares a script.

Syntax check

Lua 5.4, checked against real Lua on 22,000 mutated rusEFI example scripts. A syntax error is critical; a script too long for the ECU, or with non-ASCII text, blocks the write.

Read and write

Reads only the script's page. Writes use the tune's preview and CRC verification, scoped to the script, and never burn.

At a glance

  • rusEFI and epicEFI
  • Findings in the Activity sidebar
  • Never burns on its own
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