No tuning needed. I just answered the questions on engine displacement, what type fuel system, what type ignition system, cam duration and where I want the idle set at. The tablet gives you all kinds of info while the motor is running and also allows you to do any custom programing you might want. No, the E-Street will not control timing. I wasn't concerned with controlling the timing since in my case ignition timing was not a problem. As an added bonus Edelbrock has a special going on where they give you a free intake manifold when you buy the E-Street. I didn't need it so I sold it to a friend. Also the table is a nice 7" HP Android tablet that you can use same as any Android tablet.
