Don't rev it up for goodness sake, that's the worst possible thing you could do!!! Smoke will be there because it's over fuelling and the fuel is unspent. I assume it's running on all four and isn't lumpy??? Sounds daft but you may have a lead out, or you could have a plug breaking down. Just a suggestion, but it may be something as simple as that or it could be ECU/sensor related which is throwing the map out as said before and the car can't compensate. Try the simple things first as they are often the cause and less costly than throwing it into a garage straight away.