Diesel Chips

I am keeping my head down and hope that this post does not spark off another controversy!
I fitted diesel tuning chips to a couple of Toyota 4.2 Land Cruisers we used to have.
It made a great difference to the bottom end grunt. 
Fitting was difficult with wires everywhere.
However the Devon has  Mercedes common rail diesel.
So it's very easy to install.
Just one plug.
So I have fitted one.
Initial results are very good.
Certainly more grunt.
No sign of excessive smoke.
The unit is adjustable so I may play with it a bit more.
kind regards
Frank

Don't see why there should be any controversy Frank - VW have been using alternative maps on some of their Tdi engines for some years now 

Insurance company will need to be told.

extract from Green Flag..

Tell your insurer
You must inform your insurance company if you do any work on your car that makes it non-standard. Having it chipped to improve its performance – even if that’s just increasing its mpg – falls into that category.

Several months after my purchase of a 3 year old Buell motorbike, I discovered an aftermarket ECU had been fitted by the previous owner, which supposedly brought it to race spec. I informed my insurance and was quoted almost double my existing premium! So I removed it and fitted a standard unit, much cheaper, and no noticeable difference to the bike at legal speeds.