It is not possible to put an Arduino in between which manipulates the crank position sensor. The ECU needs the exact position of the crankshat to calculate the moment of the spark generation. And it needs the real RPM to calculate the amount of fuel injection and much more.
Thanks, I thought this the Adruino thing was a good idea because i unpugged the CPS and for a moment the bike could do 60KM/H and thought
that i maybe had found a workaround for the restriction. But this explains why the ECU went into failsafe/limp mode
Do you have any documentation about the SLEW files?
Probably u already have found this ppt from Delphi https://slideplayer.com/slide/4885385/ it contains a few slides about the slewing but i couldn't find more than that
Do you know if the Rongmao Tool uses K-Line or the CAN bus?
The 6 pin ECM adapter of the MT05 has both.
Not sure, i if i recall this correct the MT05 that i got here has a OBD2 port connected to it with only 3 pins in use, i will check which pins are exactly used and come back to this.