Find a good car diagnostic app- the iOBD2. It reads the engine data and clears DTC. It features acceleration test, o-400m test. Really a cool app for car enthusiasts.


It is available for free on Apple store,
https://itunes.apple.com/us/app/iobd2/id528881858?mt=8

and google play
https://play.google.com/store/apps/d...bHRlY2gudWkiXQ