@abbadonz I have the EDS IPF system from EDS motorsport from Germany (http://www.eds-motorsport.de/index.p...qj60m62f44v407). I also went through some extensive research, and there are plenty of options, but EDS being a long time opel tuner and having the IPF widely used by opel enthusiast sold it.
You basically download the tunes, and select the applicable one for your car/engine into the IPF and plug it into the car. The original is also saved so you can revert back. What specific Astra model and engine do you have?