Respectfully Damo, I don't know why you're being so hesitant. I did find it a bit difficult being the only person doing proper modifications to my TDCi around here, not to mention the rest of the country. But you know what, it is just another engine in the end and will behave very similar to a petrol when modified.
I am absolutely in love with my car and have no idea how I put up with it stock for three years. I've played around endlessly with intakes and whatnot to get it just right, but you just have to quit thinking and start doing buddy