I did research on tuning options and its like you can reflash stock ECU which is cheaper but there are limits to it what you can do. 15 000 reflash, its still good especially for old cars, its like you get new car.
Or you can use separate box which is more pro and racing cars use, it gives much more options, like ajust engine fan speed, turbo anti lag, etc and its like 35 000 for a box.
By doing my little research I learned that Thailand got very good tuners, and this GT module is thai made, and its one of world best, there is famous Hondata box USA made, but thais made it better. There is many tuning garages in Bangkok but I take car direct to GT Tune box manufacturer. Also they made some crazy Civic its fastest in Thailand and high in the world. So they know what they doing. Thais tune Hondas to like 360+hp but it needs more parts and higher cost, basic tuning is safe and quite powerfull with GT Tune box alone. 220hp