Link here:
http://www.motec.com.au/fueltest/ (http://www.motec.com.au/fueltest/)
Looks like v-power (at least in Oz) is the best you can buy.
Shows it all here:
http://www.motec.com.au/fueltest/results.htm (http://www.motec.com.au/fueltest/results.htm)