What’s involved? Xpower upgrade CDT tourer.

[Johndregg]

Called a local rover workshop today who offer the Xpower upgrade. When I asked what was involved I was told that they would need my car for a couple of days and that new parts would need to be added as well as the software in the ECU.
When I asked what these parts were and how much it was all going to cost he told me to use google. Got very vague.
Could someone else enlighten me? As I’ve been left with a distinctly dodgy feeling about the whole thing.