My car has low power at all speeds (rpms). In first gear when wind resistance is not big yet, the engine will go up to over 4000 rpm, but in top gear, it wont rev that high, because I am up to 60mph and the wind limits the speed.

Pretty sure the car is in mechanical mode and computer control is not working.

Though I manually adjusted the eha current while driving. between 0-6mA, there was not difference, and then between 6-12mA the performance got worse and worse. I never got better proformance, only worse by doing this.

Paul