No problem - bit short of time but can spare ten mins while James gets car ready for the dyno.

As you know, an ECU is actually a Torque controller. It controls how much torque the engine applies to our driven wheels and its based on the position of our right foot.
Traditionally we just map the system to do XYZ at any given load with correct afr/spark and then the engine just does what it does, but as things have evolved and power has increased, a better control system was required and that is when Bosch and Siemens took up using the Torque based model.

The torque based model allows you to map different torque outputs for each gear and uses Spark/Fuel/Boost/EGR/Throttle/Vanos etc to give different amounts of torque output at the wheels depending on many pre-determined input values. Anyone who has driven an Escort RS Turbo with 250bhp will realise the value of the mapper being able to tailor the engines power to the available traction of the vehicle, or limits of the drivetrain.

To elaborate on that point - have any of you ever wondered why modern cars don't wheelspin in 1st gear anymore and they often feel faster from 3rd gear onwards?
That's the difference between a standard ECU that just gives full power at all times, and a torque based model that will allow the programmer to decide how, when and where maximum torque is available.
Its all about driveability and control because, as we all well know "Power is nothing without control"

In the Ford world - Focus RS Owners will have felt this model change when they have had the 1st and 2nd gear torque limiters raised via remap and are in awe at how much more exciting the car is to drive, but often admit that its actually bloody slower if the road is anything other than dry. LOL