Put the Cziffra and Horowitz behind you!
If you can't play the piece at a fast tempo error free, then my only suggestion is to slow it down until you can play everything in the suitable time without mistakes. As a member of the audience, I would rather joyfully listen to a piece that is 1 minute longer mistake-free than something that is 30 seconds faster than average but full of errors.
Just don't slow down too much because then it is equally as painful to listen to (I had to endure a participant in a recent piano recital--I was one of the judges--and he played Beethoven's Fuer Elise so slow, I wanted to go home and eat and come back without missing the next note)
I hope I am understood.