Bazza, have you seen this product?
http://www.ebay.com/itm/350590711709
This is also interesting. ECU controlled electric thermostat
http://prodcds.bmwuniversity.com/lib...2%20Engine.pdf
The intelligent heat management including better efficiency with high engine temperatures is explained.
There's also the DISA intake system, very nice and works the same as ours !
Tapani