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Efficiency (free)

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Efficiency works with your car's OBD2 computer to help you improve your fuel economy.

App Requirements:
- A gasoline vehicle built in 1996 or newer
- ELM327 Bluetooth Adapter
- An Android 2.1 phone/device or newer with Bluetooth capabilities.

A simple and intuitive interface allows you to keep track of your progress as well as your car's most important parameters in real-time.

The star rating system is based on what percentage of your trip the eco meter was on green (Green Driving). You may increase or decrease the difficulty by tweaking your 'Eco Meter' settings in your 'Preferences' menu.  

Quick Start:
The following directions will guide through the minimal steps to get you going. Before following these steps, please make sure your OBD2 adapter is already connected to your vehicle's OBD2 port.

1. Launch the App

2. Press 'Menu' and then 'Preferences'.

3. Press 'Select Bluetooth Device' and select your OBD2 device (see note #1).

4. Back in 'Preferences' press 'Green Range Minimum' and enter your vehicle's combined fuel economy. You may find your car's combined economy through this web site if you don't know it: <a href=""></a>

5. Back in 'Preferences' press 'Light Blue Warning' and enter your vehicle's combined fuel economy divided by 2 (Ex. 24/2 = 12) (see note #2).

6. Press the back button to exit 'Preferences' and press 'Start'

7. You are set! Best of Luck!

Note #1 - If you have paired your OBDII adapter already it will show in the 'Paired Devices' list. If not, press 'Scan Devices' to attempt to find it. Once your device is found press it to select it from the list. (If you selected a non-paired device, the App may ask to pair it later when 'Start' the app).

Note #2 - This step assumes you're using the default Eco Meter setting (Instant Economy - US Imperial units). Please note if you change the Eco meter settings to use other parameter (RPM, speed, etc) you will most likely need to adjust the other Eco Meter settings (Green Range Min/Max, Light blue light) to make sense.

Paid Version (coming soon!): Though we're trying to keep this app ad free, please consider purchasing the paid version of Efficiency once it comes out. The paid version will have several new features, sensors, and won't include the annoying welcome screen every time you open/close the app. More details to come as it gets closer to release.

For any issues, questions, suggestions, and/or comments, please send us an email to  

Tags: Efficiency, OBD2, OBDII, Elm327, Ecu, MPG, fuel economy, fuel efficiency, Eco meter, ecometer, econmeter, green meter, ECU, car, truck, speed, rpm, gas, OBD, OBD-II.

iPhone correlate per Efficiency (free)

Efficiency (free) E' stato sviluppato per android da Nubbu Apps

Nome del pacchetto :

Systema permesso : 3 premi qui per mostrare/nascondere la lista
  • android.permission.BLUETOOTH_ADMIN
  • android.permission.BLUETOOTH
  • android.permission.WAKE_LOCK

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Efficiency (free) for Android was rated by Android Market Users on : 2.4/5

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