I've experienced this over the past few months, when engine drive kicks in, it feels like I'm getting a bit more power to the wheels, and I have to noticeably let off the accelerator pedal while cruising otherwise I will start to pick up speed. My only guesses as to what's causing this is that the engine is making more power than the ECU thinks it is, but I know my car didn't exhibit this behavior earlier in it's life (a feat I consider to be amazing as the ECU has no direct way of measuring the engines output), and I have a hard time believing that the engine gained horsepower over that time. Anyone else have a similar experience? I could have sworn that the transmission used to be seamless.