A few years ago i almost went to work for a firm that did steam injection to improve emission's and power they went bust(the boss was spending money the firm hadn't got!!) just wondered if anyone knows anyone who does it still, they used to run a 110 200tdi CSW and it used to go very well with no smoke and pretty good mpg it's a shame it never took off they had a couple of unit's fitted to london buses and taxis the emission where reduced by at least 50%...