All this by only being connected to the rail sensor(s) plug?
Those thin wires in the plug are not injector wires so your module does not change injector timing, it only fakes the common rail pressure signal to the ECU so that it increases the rail pressure slightly. That is also the reason why you have to set it at max in order to notice any effect, there is a limit to common rail pressure so you can not increase it a lot hence can not gain a lot from doing it.
Furthermore, your module has no knowledge about turbo pressure and can not modify its sensor signal and finally your module has no idea of engine rpm so it can only add more fuel over the whole register.
You have bought some shit which you didn't have to - there are good engine tuners in Thailand who can do a decent mapping of your engine!