Can't disclose where I work..but ain't it very obvious ?
Coming to driveability, well, its a function of many calibration parameters and is fine tuned over a period of time. A continuous process on which they are working. Hats off to mahindra system engineers for getting most of it correct the very first time. and make no mistakes, at close to 30 Euros for the ECU, mahindras have achieved the seemingly impossible--a fine balance between cost and functionality. A case in point is the independent suspension (sans the vagueness) only available in the top of the line automobiles world wide is available in scorpio for a fraction of cost.
By the way, taking of updates, its confirmed that Tata would be using Bosch patented CAN for in-vehicle communication. A good move towards complete OBD support.