To be perfectly honest, under normal driving, I've normally grabbed another gear at that point, as its done its best by then. Power and torque fall off pretty steeply from that point.
I'd much rather be sat at the point of peak torque, rather than on the declining curve, if you get what I mean.
It runs out of steam at about 4500rpm I think (its too cold outside to go and look!)
It took some getting used to, as it does require a modified driving style - much like you can get caught out in a very high revving car if you're doddling along at 2k rpm, you can get caught out in the PD when sitting at 4k rpm needing more go - the solution is the same in both cases, grab another gear!
