well, when I had my P5...it didn't like the higher revs, and I rarely took it past 5k...cept when really trying ta giver, but she loses most power by 6k any way. However, on ramps, I also enjoyed the exit the turn going 100km/h and sometimes faster...people do look at you funny...lol. With the speed, there is a bit more power up there(thank you turbo) so I usually take her to 6.5k on onramps and such, and everytime I accelerate, I taker up to4.5k in first, and about 3.5k in second when driving conservatively. When giviner, I'm right up there at the 6k mark