[Harper31]

From superchips seems like good gains!

http://www.superchips.co.uk/search?make=37&model=538&fueltype=3&variant=2630

 

[Flat Eric]

They do one for the 1.7CDTi as well. It won't be warranty friendly though so perhaps not idealfor the first time owner butok for a second owner

http://superchipsblog.co.uk/2013/01/25/chevrolet-opel-vauxhall-1-7-cdti-130ps-ecu-remaps-added-to-bluefin-platform/#more-513