Random what you find when lurking around the internet He\'s a mate of mine, the setup works nicely - will run on straight petrol all the way to E90 and anywhere in between. The sensor actually sits in the return line from the fuel rail and it returns the temperature and ethanol content measured using pulse width and duty cycle.
The comments by others earlier about cold start and power dropping off aren\'t very accurate either, in many cases you can actually make the power hold on better in the higher rpm - especially if it is an octane limited setup and cold start can be made to work fairly well, we don\'t have the most extreme climate so realistically you should at worst maybe have a couple of extra cranks before the engine fires up from dead cold. After that it should drive like "normal".
It is great stuff, smells awesome and makes more power everywhere - can make an otherwise simple setup seem like a serious weapon... just have to make sure the fuel system is up to spec and keep an eye on the fuel filter etc.