OpenRemap Harness · native desktop app — Windows · macOS · Linux
ECU binaries, without the black box.
The Harness puts the whole OpenRemap engine behind one clean interface — identify, inspect, edit, render and automate ECU firmware, from a single window.
● Harness v1.0.0 — coming soon · the engine is already live
The Harness
The entire engine. One interface.
OpenRemap Harness hosts the engine behind a desktop app, and gives every role in the tuning workflow the tools they need — in one place.
Graphical engine host
A clean desktop front-end for openremap-core — the engine analyzes, the app makes it visual.
Fully customizable
A workspace you shape for tuners, researchers and ECU reverse engineers.
Hex viewer + editing
Inspect firmware in a fast hex view with light, deliberate edits.
2D & 3D map rendering
Modern, GPU-fast rendering of ECU maps in 2D and 3D.
Automatic workflows
Script and schedule repetitive jobs — for individuals and enterprise.
Offline & native
Windows, macOS, Linux. No telemetry, no cloud — your files stay local.
openremap-core — the engine
The engine is open. So is the method.
openremap-core is the engine the Harness hosts — an open-source Python library with a Rust core, live today as a CLI. It reads ECU firmware the hard way: by decoding the microcontroller itself.
ECU reverse engineering has long been locked behind expensive, closed tools. OpenRemap opens the method, so tuners and researchers can see, verify and build on it.
No black box
Every match is decoded from the CPU itself and evidence-backed — never a secret lookup table.
Open by design
MIT-licensed core, fully offline, zero telemetry. Your files never leave your machine.
Built to last
A community-owned alternative to closed tuning suites — free to verify, extend and keep.
The .remap recipe
One file. Stock → tuned.
Cook a diff into a single portable recipe — every changed map annotated, volatile regions flagged, checksums re-verified. Apply it anywhere the engine runs.
# tuned.remap — schema 4.5
name: Stage 1
base: stock.bin
target: tuned.bin
diff:
maps: 14
volatile: 3
checksums: ok ✓
maps:
- id: 0x1A2F · axis: rpm×load · Δ +11.2%
- id: 0x3B14 · axis: load×iat · Δ +6.4%Roadmap — the road to v1.0.0
One step left: the Harness
Stabilisation
Current release line — live now
Cross-firmware
Relocate tunes across SW revisions · plugins
Modern TUI
Refined terminal experience
OpenRemap Harness
Desktop app · Windows / macOS / Linux
● release status — v1.0.0 pending
Stand by for the Harness
The desktop app is coming to Windows, macOS and Linux. Watch the repo — we’ll raise the flag the moment v1.0.0 drops. Meanwhile, the engine is live:
$ pip install openremap