Miserlou, is it REALLY a good time to play test pilot when you just had an engine quit in the high speed (after V1) portion of the T/O roll? You MUST fly exactly to the numbers to guarantee your performance. Exceeding Vr is fraught with danger.
As an aside, every knot above V1 before the engine fails is a bonus for performance, but you cannot mess with the calculated speeds, and don't neglect to rotate a bit slower to be certain that you make V2.