Chips for diesels?

[RazMan]

I have found a few varieties of tuning chips for diesels but which ones have you guys used? They seem very expensive for the amount of bhp increase (30bhp) so are they worth it?

Any input would be appreciated :)

[Paul in NZ]

think the latest chups are worthwile,not sure what engine you have .I think one chip perfomed very well in the tds...30 bhp is a good gain.