Spool 26.9.1

T3 calibration tables, ECU checksum recognition, and clearer editing views.

Download for macOS Download for Windows Download for Linux (Debian/Ubuntu, x86-64) Linux tarball

The macOS DMG is Developer ID signed and notarized. The Windows app and installer are signed and timestamped with Microsoft Artifact Signing under WLAN GEEKS LLC. The Linux packages were built natively on the Linux NUC. Spool checks each in-app download's size and SHA-256 against the public update feed.

Archived T3 calibrations

• Spool recognizes the checksum compare byte used by the archived T3 ECU code. The 1991 BIN checks $8003; the 1993-named 471 BIN checks $8005. Both original images pass their own ECU checksum. The former generic 32 KiB check incorrectly warned that the 471 image was bad.
• Edits preserve the ECU checksum, and Undo restores the original bytes.
• The 471 image opens with the corrected library definitions. A false 3D grid in its original sidecar is marked read-only; the sidecar remains available for inspection. The corrected AIS function and 9 × 17 timing grid are shown.

Tables and editing

• The 3D surface uses the full pane width above the editable heatmap, with clearer axis labels and controls.
• Archived type-6 choices display their named values. Dropdown edits, Undo, and Redo keep the shown selection in sync with the BIN.
• Grid editing rejects read-only or overlapping tables and reports the reason in the detail view.

Turbonator files are custom calibration work. They were used as a research lead, not as factory evidence. The T3 checksum behavior above was checked directly against archived BIN bytes and their ECU code. The archive audit verifies selected table locations and geometry; it does not prove every library label or engineering scale. Review changes carefully before flashing an ECU.