by avtodiagnostic » Mon Feb 24, 2014 12:20 pm
Hy
Whit MASTER toll- you can use files from diferent places(Tuners) and you can use it in winols,etc... for modifing the file !
Slave toll - you can only use files from the Tuner who have the right MASTER toll to your SLAVE toll and you can not use files for changing and modifications whit winols,ect...
So when you will make your own files, than you need a master toll ! ;)
I hope this help you more to understand it !