Thanks for the details on the VMS, Bill! I look forward to the pictures and related "user experience" report.
You have to dig around a bit to get the specs on the CANtrak. Click on the GEM Software link on this page:
http://www.cantrak-int.com/productdatasheets.html
Here's brief summary of the CANtrak specs. I haven't purchased this unit but will share my thoughts if I do.
DISPLAYED DATA IF RECEIVED FROM THE ENGINE AND TRANSMISSION ECU'S:
ELECTRICAL
Electrical Potential
Battery Potential Switched
Net Battery Current
Alternator Potential
Alternator Current
FUEL
Fuel Remaining
Fuel Rate
Instantaneous Fuel Economy
Trip Fuel Economy
Trip Fuel
Trip Fuel Rate
Total Fuel Used
Fuel Leakage 1
Fuel Leakage 2
DISTANCE
Distance Remaining
Trip Distance
Total Vehicle Distance
PRESSURE
Fuel Delivery Pressure
Barometric Pressure
Auxiliary Pressure 1
Boost Pressure
Air Inlet Pressure
Air Filter 1 Differential Pressure
Injector Metering Rail 1 Pressure
Injector Metering Rail 2 Pressure
Coolant Pressure
Engine Oil Pressure
Transmission Oil Pressure
Clutch Pressure
Air Start Pressure
Injection Control Pressure
TEMPERATURE
Engine Coolant Temp
Engine Intercooler Temp
Engine Oil Temperature 1
Transmission Oil Temperature
Turbo Oil Temperature
Fuel Temperature
Intake Manifold 1 Temp
Air Inlet Temp.
Exhaust Gas Temp
Auxiliary Temp 1
Engine ECU Temp
Exhaust Gas Port 1 Temp
Exhaust Gas Port 2 Temp
Turbo 1 Compressor Inlet Temp
PERCENTAGE
Fuel Level
Acceleration Position
Throttle Position
Engine Oil Level
Coolant Level
Estimated % Fan Speed
Drivers Demand % Torque
Actual Engine % Torque
Torque Use at RPM
SPEED
Input Shaft Speed
Output Shaft Speed
Engine Speed
Turbo 1 Speed
Engine Desired Operating Speed
Navigation Wheel based Vehicle Speed
TIME
Total Engine Hours
Trip Engine Hours
Service Hours
MISC
Torque Convertor Lock-Up Engaged
Current Gear
Selected Gear
CANTX Disable
FAULTS (SUSPECT PARAETER NUMBER) AVAILABLE WITH RELEVANT MESSAGE SUCH AS TOO HIGH/TOO LOW.)
Engine coolant pressure
Accelerator Pedal Position
Engine Load
Fuel pressure
Fuel level
Water in fuel
Engine Oil level
Engine Oil filter differential pressure
Engine Oil pressure
Boost Pressure
Intake manifold temperature
Air inlet pressure
Barometric pressure
Engine coolant Temperature
Coolant level
Transmission oil pressure
Crankcase pressure
Battery voltage - switched
Battery voltage - actual
Exhaust temperature
Fuel temperature
Engine oil temperature
Transmission oil temperature
Fuel rate
Engine speed
Total Engine hours
Total Fuel used
Auxiliary Temperature #1
Navigation Based Vehicle speed
Engine speed sensor
Timing Sensor
ECU 8V DC Supply
5 Volt DC Supply
Engine Fuel metering