Whether or not i understand LIMP MODE is still to be determined but my car isnt restricting itself to a certain speed, neither does it hit a 'rev ceiling' that it will not go beyond. I can get away with carefully accelerating but as soon as i push it too much it flashes EAC FAIL and wont accelerate one bit. I come off the power for a second or two and then i can carefully accelerate again and the EAC FAIL has stopped flashing. I can get away with high revs to a degree, just as long as i don't try to floor it to get them. Also, i got it into town doing up to 60mph so i am not getting restricted to a certain speed either. Again, as soon as i stop being careful with the power it gives me nothing and flashes those horrible words.