It all depends. Kess v2 good clone used be ok for older ecus only, but now also work great with newer ones. and with a slave you will have to rely on the master for your maps whaere as if you have a master you can write your own or choose where you get them from.
Kess V2 5.017 Rework PCB Manual
K-TAG - Alientech
Kess V2 Clone vs Original
Clone Fake Alientech kess Vs Real Genuine tuning tools - what's the difference ?
Kess V2 Clone vs Original
Kess V2 Clone vs Original
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Alientech K-TAG Slave
1. Can support car / truck / tractor / bike! KESS V5 supports vehicle according to Motor. So V5.017 can support new vehicle!, 2. Latest Firmware
V2.8 KESS V2 V5.017 Manager ECU Tuning Kit Master Version No Token Limitation for Both Car and Trucks