Since I will soon be getting my engine back from VTengines, it probably wouldn't hurt to buy a datalogger. I was looking at the software/cable sets sold by Digital Tuning and the measurement values it will show. Here is the list from their web page:

Calculated Load Value
Engine Coolant Temperature
Short Term Fuel Trim - Bank 1
Long Term Fuel Trim - Bank 1
Short Term Fuel Trim - Bank 2
Long Term Fuel Trim - Bank 2
Fuel Pressure (Gage)
Intake Manifold Absolute Pressure
Engine RPM
Vehicle Speed
Ignition Timing Advance
Intake Air Temperature
Air Flow Rate from MAF
Absolute Throttle #1 Position
Oxygen Sensor - BANK 1 - Sensor 1
Oxygen Sensor - BANK 1 - Sensor 2
Oxygen Sensor - BANK 1 - Sensor 3
Oxygen Sensor - BANK 1 - Sensor 4
Oxygen Sensor - BANK 2 - Sensor 1
Oxygen Sensor - BANK 2 - Sensor 2
Oxygen Sensor - BANK 2 - Sensor 3
Oxygen Sensor - BANK 2 - Sensor 4


Can someone explain why their are so many oxygen sensors? I know our cars have one in the downpipe and one after the catalytic converter. My second question is will this type of datalogger allow you to see what your air fuel ratio is under boost (I want to be able to see a line graph similar to those shown on the dyno graphs).


Thanks for your help,
Kurt

Banks of cylinders. Our cars have only one bank. 2 o2 sensors per bank on our car. It depends on how many cats are on the car.

It will display o2 readins in both voltages and graphical form

>Banks of cylinders. Our cars have only one bank. 2 o2
>sensors per bank on our car. It depends on how many cats are
>on the car.
>
>It will display o2 readins in both voltages and graphical
>form


^^^ fart smeller.