Mpps v13,  Mpps V12 , no counter ,no time  limited . At one side,it can be used after 128 times .At another side, it will not damage after update . but please notice , it can't work with V15 software . if you install the v15 with the hardware , it can't work , but the hardware will not damage . you need uninstall the V15 software , install the v12 software , or V13 software, then it can work again.

welcome to inquiry for more deails.

http://www.obdok.com/mpps-v1302-chiptuning-p547.html