And to add to [ref]Pbondar[/ref]'s wise words of experience, it is not always the headline figure that you want.
Peter did a comparison of a few N20s that got remapped around the same time and whilst mine hit 279bhp I was slightly disappointed at the first glance at the headline torque figure (which is, after all, what you really need on a normal road drive). However, I then noted that many had higher torque figures, but took a while to climb to that, whereas mine hit peak torque at 1500rpm and maintained a perfectly level line until just over 5000rpm. Even then it only dropped slightly until 6000rpm.
For so many so called 'identical' engines to produce so many variations means it is just pot luck what you get...................... accepting of course that bespoke mapping sessions are likely to yield much better results.
So now I've got over myself regarding the big numbers and simply enjoy the seamless flow of torque pushing me along.
If I could have achieved that same torque at 250bhp I'd have been just as content.