I don't want to rain on anybody's parade but isn't the IDI technology obsolete? I can't find solid efficiency information on pilot ignition systems but I don't think they take the 15% fuel use hit that IDI's do. Links to consider -
http://www.bankspower.com/tech_dieselevolution.cfm
http://www.edmunds.com/insideline/do/Features/articleId=108977
Later -
http://www.bankspower.com/tech_dieselevolution.cfm
http://www.edmunds.com/insideline/do/Features/articleId=108977
Later -