What is this measuring device tha tlooks liek a square controler in the right of hte image

 

The Power FC commander? Its used with the Power FC computer to tune and monitor. Without it the power fc is pretty useless.

 

Disagree that pfc is useless w/o commander.... forgetting teh datalogit are we?

 

The datalogit opens up a whole nother aspect. It is very usefull, but is beyond what most people know what to do with.

 

He didn't forget the datalogit. It's much easier to drive around with the commander, vs those guys that drive around with their entire passenger compartment covered in a spaghetti of wires, serial cable, power cable, a/c adapter, laptop etc etc.

Point is, the datalogit is an extremely valuable tuning tool that is used occasionally. The commander can be used everyday and really expands your interactions with and the capabilites of the power fc

 

You should atleast circle it.

 

The sensor voltage readings on the commander have also helped me diagnose the problems I had with my AIT and water temp sensor.