I would like to see the following test :
4 cars of exactly the same make and model. Each car's fuel tank is drained completely empty, and filled with exactly 45l of fuel.
Two of the cars have Turboflo's fitted, whilst the other two doesn't have. Nobody knows which cars have the Turboflo's.
All the cars fuel gauges are disconnected/disabled.
All the drivers are instructed to drive as far as possible until the tank runs out of fuel. Because nobody knows which cars have the turboflos, and nobody can see their fuel gauges, they can't start to "economize" to cut down on fuel usage.
A recovery vehicle (bakkie with full jerrycans) also drive with.
This should be interesting to see...