[SaabJohan]

Some tuners develope their own development tools, while some steal from the car manufacturer or from the people that make their own tooling.

Tuning software can also sometimes be stolen from the car manufacturer, it can be some sort of testing software with more power, sometimes it stolen from other tuners. Some tuners also sell their software to others.

Most of the work done by the car manufacturer is in the software, and not in the actual maps, and luckily it's here that we find most of the safety features.

There is someone that can tune the car if you really want it, if there is no chip availible you can get a software custom made just for you, but then it cost quite some money.

First, find out what engine management system your car has, brand and model type. Then you can try to find out which company are good on that particular system, some systems are very easy to manipulate while some are very difficult, for example Saab Trionic 8 and Bosch Motronic ME7 belongs to the difficult ones.