Overview: 
1. OBD-II Software for ELM327 USB is a free program that allows you to use your PC and a hardware interface to get the information from your car’s computer. 
2. The program is very user-friendly, and easy to learn. It is also very easy to install: simply extract the files into a folder on your computer’s hard drive, and you’re ready to go. To uninstall the program, simply delete the entire contents of the folder where the program resides. 

Following are some of the parameters which could be read from the vehicle: 
1. Vehicle Speed; RPM; Fuel Consumption; Engine Coolant Temp; Fuel Pressure; Calculated Engine Load; 
2. Throttle Position; Intake Manifold Pressure; Air Intake Temp; Timing Advance; Mass Air Flow; 
3. Fuel Level; Barometric Pressure; EVAP System Vapor Pressure; Fuel Trim 
4. Note: Your vehicle may not support all above parameters. How many parameters you can get is depended on the vehicle manufacturer’s implementation. 

ELM327 Free software: 
1. GM Mode 22 Scan Tool by Terry 
2. OBD Gauge for PalmOS and Pocket PC by Dana Peters 
3. OBD Logger by Jonathan Senkerik 
4. OBD-II ScanMaster by Wladimir Gurskij (ScanMaster 3.52 – local copy) 
5. Obd2crazy.com 
6. OBD2 Scantool by Ivan Andrewjeski 
7. OBDII for ELM322 by David Huffman 
8. pyOBD by Donour Sizemore for MacOSX and Linux 
9. RDDTC by Pete Calinski 
10. Real Scan by Brent Harris 
11. ScanTest for Pocket PC by Ivan Ganev aka a-ser 
12. wOBD by WDT 

Product Features

• The latest PC-based scan tool. It supports OBD-II protocols and is dispatched with a number of compatible programs. OBD-II Software is a free program that allows you to use your PC and a hardware interface to get the information from your car’s computer.
• Very user-friendly, easy to learn, and easy to install.
• The interface is OBD-II. The output protocol (connection to laptop) is USB.
• The software supports two platforms – DOS and Windows(include Windows 7).
• Read diagnostic trouble codes, both generic and manufacturer-specific, and display their meaning (over 3000 generic code definitions in the database).