🌿 Flex Fuel Monitoring

Know Your
Ethanol Mix,
Live.

Flextron connects to the Flextron ECA sensor over Bluetooth to display real-time ethanol percentage and fuel temperature — right on your phone.

Download on the App Store Get it on Google Play Flextron ECA Hardware →
0–100% Ethanol Range
−40 to +125°C Fuel Temp Range
BLE Wireless
6 Tuning Platforms
Free App Download

What it does

Everything You Need for Flex Fuel

A complete toolkit for monitoring, logging and configuring your flex fuel setup from your phone.

📊

Live Dashboard

Real-time large-format ethanol (E-notation: E85, E15…) and temperature gauges with animated needle and zone-coloured arc track. Sensor error overlay when the ethanol sensor is disconnected from the module.

📡

Bluetooth Auto-Connect

Automatically connects to your Flextron ECA module whenever it comes in range — no manual pairing needed. RX data indicator blinks on every received packet.

📝

Session Logger

Record and save timestamped ethanol and temperature sessions. Review and export logs at any time.

🗺️

E85 Station Map

Integrated map of nearby E85 fuel stations powered by live data. GPS is active only while the Map screen is open, saving battery at all other times.

⚙️

CAN Bus Setup

Configure message ID, frame type (Standard / Extended), update rate and bus speed. Settings saved to device memory with live verify readback.

🔄

OTA Firmware Update

Update your Flextron ECA wirelessly over Bluetooth. The app automatically detects new firmware on connect and prompts to install — no USB required. MD5 integrity check verifies every transfer.

🔵

BLE Diagnostics

Built-in Bluetooth debug monitor to inspect raw BLE packets from the sensor for advanced troubleshooting. Full in-app debug log with level filtering and clipboard export.

🔌

CAN Bus Output

The Flextron ECA writes live sensor data to the vehicle CAN Bus via a galvanically isolated interface, preventing ground loops and protecting your vehicle's network.

🔐

Device Password

Change the Flextron ECA access PIN directly from the app over Bluetooth — no need to re-flash firmware.

🌙

Dark & Light Theme

Full dark and light theme support with high-contrast gauges — easy to read in direct sunlight or at night. Follows system preference automatically.

App Screenshots

See the App in Action

Every screen of Flextron is designed for real-world use in and around your vehicle.

Live Dashboard
Live Dashboard
Device Scanner
Device Scanner
E85 Station Map
E85 Station Map
Station Detail
Station Detail
Log Recorder
Log Recorder
Saved Logs
Saved Logs
CAN Bus Settings
CAN Bus Settings
CAN Bus Settings
CAN Bus Options
App Settings
App Settings
Bluetooth Debug
BLE Diagnostics

Compatibility

Supported Tuning Platforms

Flextron ECA CAN Bus output is natively compatible with the most popular ECU flash and tuning tools. Message ID and update rate are fully configurable to match any platform.

HD
Supported
Bootmod3 (BM3)
Supported
Visconti
Supported
MHD Tuning
Supported
MG Flasher
Supported
EcuTek
Supported

Ready to go flex?

Download Flextron for free and pair it with the Flextron ECA complete sensor kit.

Download on the App Store Get it on Google Play

Need the hardware? Buy the Flextron ECA kit →