Hi guys,
I want to make chasis dyno for car as 2wd or 4wd. a person advise Arduino device on another forum . I researched sinece long time.. I need dyno electronic and software.Can Arduino help me about this subject? or you know another way. Thanks Alot .. I waiting answer soon.
What is a dyno?
I did a google search and came up with:- Dynamometer - Wikipedia
Is this what you are trying to make or are you trying to interface one? And what is a 2wd or 4wd?
An arduino can measure voltages, and time between digital inputs and turn stuff on and off.
You have to be a lot clearer as to what you want to get any useful help. Were good but we are not mind readers. 
2wd = 2 wheel drive. - Normal Car
4wd = 4 wheel drive. - Off roader
As to what he wants to do with a dynamometer I'm clueless. You generally need some heavy electrics to generate and then dissipate a lot of power from the wheels.
90% mechanical 10% Electronics.
You would need to determine RPM and Torque with sensors that would be attached to Arduino. Which sensors are selected would determine how much work it needs on the Arduino.
- Determine the 90% mechanical part of the design.
- Figure out which sensors you will use.
- Then figure out how to write code for the sensors.