[B]IF YOU GUYS ARE LOOKING FOR PROPER RE-MAPPING OF ALL Vectra and Signum Petrol and Diesel engines Look here


This is a proper remap that is stable and safe.
You can also put a box on afterwards to increase Bhp and Torque even more.
Most people won't find that necessary as the difference between a re-map and a tuning box is totally different, a remap is much more driver and drivetrain friendly.