Just another thought, is your turbo OK? No strange whooshing noises or the anything else that at some point in the not to distant past has made you think "hmm, that's not the usual noise I get when I drive like this"
@dazj, I'm sorry but I must be thick, please explain how your fault is "exactly the same" as the original OP. If it is the word "smoke" then maybe you missed that the original OP smoke was coming from a glow plug connection and yours is from the exhaust!? Other than the word "smoke", and the "no fault lights" I fail to see how your issue has anything to do with this post.
I don't have any warning lights on my dash and occasionally if I boot it I might get a little smoke out the exhaust, I would say you have more in common with my car than the original OP. Or are you suggesting that maybe I should think about changing my loom as well? (Just kidding).
I think your best bet is to start a thread of your own, clearly stating the symptoms you actually have. You will probably get better answers.
PS: I wasn't joking about disconnecting the MAF/MAP (not sure which you have), and report back any difference it makes, but please start a new post.
...and when you say your car exhibits exactly same fault as OP, smoking and burning! Yet you say it still drives fine until up to normal operating temperature. Are you sure you have posted in the right thread?
You could try unplugging the MAF/MAP(?) on the airt intake and see if this makes any difference.