Hi everyone, I have noticed for some time now that when cruising on motorway at speeds around 60-65mph and push the car hard to accelerate.,( pedal to the bottom) the car reacts as usual and accelerates as usual however there is some kind of pulsating while gaining the speed , similar to rpm limiter in conventional petrol manual car but at lower frequency., it has been like that for many miles perhaps 30k or more , I can’t remember if I noticed that before the car went for a ecu firmware up