it depends on the structure of the tournament and your stack of depard but generally on a turbo MTT I tighten the game early and play wide mid-game when everything goes well and I have enough chips to play depth.
See more hands early when they are cheap. If you catch some cards and build a stack you can afford to slow down a bit in the middle stage. If you still have a good sized stack as you get deeper you can move along quickly to put more pressure on the short stacks. But, if you don;t have a good stack and the blinds are becoming a factor you should take more time to slow down the chip loss a bit.