See this:
http://www.dynopower.freeserve.co.uk/nitrous_oxide/

Thanks for that most interesting link. It's been bookmarked for possible future use!

Graber

That was very interesting.

Was thinking about giving it a go however when the guy said that he blew his garage up I has second thoughts.

Hopefully when I have the car finished I will give it a bash

What a character? - have you seen his nurse?