View ECM Parameters ↗
Settings with explanations.
Search named ECM parameters, understand their effects and stage changes in the app. Review old and new values before writing.
Built for Buell. Built for what’s next.
KEEP THE BIKE.
UPGRADE THE TOOLS.
Live data, diagnostics and tuning tools for your Buell, with a context-aware AI garage buddy built in.
ANDROID FIRST. iOS is next.
Classic Bluetooth BLE USB serial Check your setup ↗
The next chapter
FAMILIAR ROOTS.
A WHOLE NEW RIDE.
ECMDroid was part of the toolkit. When it stopped working for riders, the need didn’t disappear.
BuellTune brings that familiar diagnostic workflow into a new app: a modern interface, deeper tools and a path to iOS, a platform ECMDroid never reached. Not just a new coat of paint. A new chapter for the bikes we keep riding.
A GARAGE BUDDY.
ON EVERY SCREEN.
You shouldn’t have to leave the app, copy a reading and start explaining your bike from scratch.
BuellTune brings AI into the diagnostic workflow. Open the assistant alongside the screen you’re using, ask about what you see, then get back to the job.
- Knows where you are.
- Your current screen and available selections give the conversation a starting point.
- Can look at the data.
- Read-only ECM tools let the assistant consult available readings and trouble codes instead of relying only on your description.
- Keeps you in control.
- Get explanations and suggested next steps. The assistant does not autonomously tune or flash your ECM.
Bring your own API key (BYOK). Choose a supported AI provider or connect a supported self-hosted server. AI is optional; provider usage charges may apply. Messages and relevant ECM data go to the provider or server you configure.
AI setup and privacy details ↗FROM RECORDED DATA TO A REAL CONVERSATION
Read what happens in the demo
Log Player is paused at 2:58 in a BUEIB recording. The visible readings are 5,052 RPM, 74.6° throttle, 105°C engine temperature and 100% AFV. The assistant opens over the player, keeping that recorded context.
The rider selects “What’s happening here?” and follows up with “What do the readings mean? Include the values.” The assistant uses the app’s read-only tools to inspect recorded channels and error codes, then explains the values in a table.
The rider then asks for a short, three-sentence summary without a table.
Closing the assistant returns to the same playback position. This demonstrates the conversation, not a validated diagnosis. AI interpretations can be wrong and are not a substitute for mechanical inspection.
LESS GUESSWORK.
MORE UNDERSTANDING.
From the first warning light to your next calibration, see what’s happening inside your ECM.
GO DEEPER IN THE GARAGE.
Real tools, not just a dashboard. Explore them with the built-in simulator before connecting your bike. Select a screen for a closer look.
View ECM Parameters ↗
View EEPROM Editor ↗
Get down to the bytes.
Inspect the raw EEPROM, select a byte to see its details, and import or export calibration files. Advanced edits stay in your hands.
View Active Tests ↗
Check one system at a time.
Access supported pump, fan, injector and ignition tests, plus a guided TPS reset. Review the cautions before actuating real hardware.
View Log Recorder ↗
Keep the data from your ride.
Save ECM sessions at your chosen interval, replay recorded readings in the app, or export MegaLogViewer-compatible MSL files for deeper review.
View Torque Values ↗
A reference within reach.
Look up the built-in Buell XB fastener torque reference without connecting an ECM. Confirm the specification against your bike’s service manual.
Screens are real Android captures. ECM readings come from the built-in simulator, not a live motorcycle connection. Available readings and functions depend on your ECM. Never operate the app while riding.
Your bike. Your connection.
BUILT FOR
YOUR BUELL.
XB Firebolt, Lightning and Ulysses. Fuel-injected tubers. The 1125 twins. BuellTune supports the DDFI, DDFI-2 and DDFI-3 ECM families fitted to the models below.
Find your bike.
These are factory model years, not registration dates. Availability varies by market; special editions follow their base model. Features depend on the ECM and firmware actually fitted to your bike, including any replacements or modifications.
XB9 & XB12
DDFI-2: 2003–2007 / DDFI-3: 2008–2010
| Model | Model years |
|---|---|
| XB9R Firebolt | 2003–2007 |
| XB9S Lightning | 2003–2004 |
| XB9SL Lightning Low | 2003–2004 |
| XB9SX Lightning CityX | 2005–2010 |
| XB12R Firebolt | 2004–2010 |
| XB12S Lightning | 2004–2008 |
| XB12Scg Lightning Low | 2005–2010 |
| XB12Ss Lightning Long | 2006–2010 |
| XB12STT Lightning Super TT | 2007–2008 |
| XB12SX Lightning CityX | 2010 |
| XB12X Ulysses | 2006–2010 |
| XB12XT Ulysses Touring | 2008–2010 |
| XB12XP Ulysses Police | 2009–2010 |
Fuel-injected tubers
DDFI / DDFI-1
| Model | Model years |
|---|---|
| X1 Lightning | 1999–2002 |
| S3 Thunderbolt · fuel-injected | 1999–2002 |
| S3T Thunderbolt Touring · fuel-injected | 2000–2002 |
For 1999, the Thunderbolt’s touring equipment was offered under S3 rather than a separate S3T model.
1125 twins
DDFI-3
| Model | Model years |
|---|---|
| 1125R | 2008–2010 |
| 1125CR | 2009–2010 |
Not every Buell uses DDFI.
Carbureted models—including Blast, S1/S1W, M2/M2L, S2/S2T and 1997–1998 S3/S3T—are not supported in factory form. Race-only XBRR (2007) and 1125RR (2010), EBR 1190 models and newer Buell platforms are not included in this support list; compatibility has not been established.
This is ECM-family coverage, not a claim that every model, firmware or feature has been individually hardware-tested. Confirm your ECM ID and use a compatible adapter before reading or writing.
Model-year and ECM references
Buell model-year production history, ECMSpy’s ECM generation guide and the 1999 Buell model overview. These references identify model years and ECM families, not BuellTune hardware-test results.
Android
First release focus
- Buelltooth + Bluetooth Classic
- Classic serial (SPP) adapters, including Buelltooth. Pair in Android Settings, then connect in BuellTune.
- Bluetooth Low Energy
- Supported serial profiles include CC254x, Microchip RN4870/71, Nordic UART and Telit TIO.
- USB-to-serial
- Compatible serial adapters on Android devices with USB host / OTG support and the correct bike-side cable.
iOS
The next chapter
The same Buell-focused mission, coming to iPhone. Plan on a compatible BLE serial adapter.
Know before you buy.
See what’s ahead
Classic Bluetooth Buelltooth and USB serial are not supported by the iOS app. An Android-compatible dongle is not automatically iPhone-compatible.
Compatibility depends on your ECM, firmware, serial profile and wiring. Support for a protocol is not a claim that every adapter has been hardware-tested. Check your exact setup before buying hardware.
ANDROID FIRST.
NOT ANDROID ONLY.
Android
Modern diagnostics and tuning, built around the bikes and adapters already in your garage.
iOS
A native iPhone experience for the Buell owners who never had an ECMDroid option.
Real progress.
Release announcements, supported hardware news and meaningful development updates. No promised launch date or guaranteed early access.
BEFORE YOU PLUG IN.
Is this ECMDroid with a new name?
No. BuellTune carries forward familiar Buell diagnostic concepts in a new app with a modern interface, calibration history, logging and optional AI assistance. It is an independent project, not an official Buell or Buelltooth product.
Can I download it yet?
This is a preview and interest page, not an app-store release announcement. Android comes first, with iOS next. Public release timing, distribution and pricing will be announced when confirmed.
Will it work with my motorcycle?
Check the model-and-year list for XB, fuel-injected X1/S3/S3T and 1125 coverage. The ECM and firmware actually fitted to your motorcycle matter, not only its model year. You also need a compatible diagnostic adapter, correct wiring and the correct ECM protocol settings.
Does it tune the bike automatically?
No. You choose what to inspect and change. EEPROM writes and active tests require care: incorrect calibration or an interrupted write can damage operation. Back up your original calibration and follow the service procedure for your bike. AI does not autonomously flash or tune the ECM.
What do I need for AI chat?
AI is optional and uses bring your own key (BYOK): add your own API key for a supported provider, or connect a supported self-hosted server. You choose the provider and model; provider usage charges may apply. Your messages and relevant ECM data go to the provider or server you configure. AI answers are not a substitute for service documentation or mechanical judgment.
For the next miles.
BE PART OF
THE NEXT CHAPTER.
Android release news. The road to iOS. Updates for the people keeping these bikes on the road.
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