So I have been driving with the CRD3+ for quite a while now and have settled with Map 2+2 - it seems to be the sweet spot for my driving style. No weird things, no judder, no anomalies at all - it is simply just enjoyable in all aspects.
I have been running with map 2+2 straight for around 4.500 km now, so enough to start making some comments about economy (my car and driving style). So far it seems to have settled around 20.7km/l - roughly the same as a good 58mpg - so even though I have more power it doesn't seem to have affected that part. That car is rated to be 22.2 km/l - so only a deviation of ~7% and in my world that is just fine.
Please note that I rarely use it for city driving - using wifes Seat Mii when going down town.
I can't say much on how the economy was prior to installing the CRD3+, as I have pretty much used it from the beginning - but when comparing to the figures in spritmonitor.de - a 4.8l/100km is in the lower end and definitely approved.
If you ask me to run without the dtuk box for a while to compare economy - well that is not going to happen - don't want to drive without it
