krew

i don't know how to explain this situation, my english is not that good too. i dont't know how the YPVS realy works but if i check it today i got smarter. if i have gearbox on neutral and i give gas the speed goes over 6500-12000 and then few seconds it wont go over 6500 and the valve like wont open anymore. same thin happen when i drive with 4, 5 and 6 gear. with 1,2 and 3 its almost normal. idk did u understand me.

i think thta something is wrong with YPVS. the YPVS electric engine is working but if the speed is like 6500 it stuck. when i disconnected the cables and turn engine on and gave the gas it stucked same way like it stucked with YPVS engine. i don't know what to do anymore, i have tried to do everything. whether there may be problem that i have old candle and or some electic issue ?