DONT DO IT !!!
i ran HHO in my 2002 chevy 6.0l gasser i have a mint setup all done right too. my ecm whent bazerk had alot higher egt's too. plus the mileage was worse cause you work your alternator too much ( and i have a 200 amp alt ) mine dropped by 2mpg's ! as far as in a diesel gos NEVER !! might as well run gasoline in place of diesel... does HHO produce flamable gas...Yes it does if you want something that is a proven " alternative fuel " for diesels look up "wood gas generator" i built a 23hp kubota generator to run off of it uses diesel only at idle.
1983 Chevy C-30 / Cummins 12v powered, 5" dual miter cut stacks, AFC FF, KDP killed, 3600 springs, #10 fuel plate, SM465 trans, 4bt flywheel, 4.56's