My Sapphire sits between the 'R' and the 'O' of NORM, I'm basically running Stage 3, with RS500 Intercooler, swirl pot and breather system.
If Im driving out on the open road it will sit just in the centre of the R but if if I'm stoping and starting and going under 50Kph it will fluctuate between the 'R' and the 'O'. My fans kick in at the top of the 'O' so often if I dont let my car cool down before I turn it off they will kick in and bring the temperature back down.