The engine will completely fail after about 5,000 miles if you run in Sport mode all the time. That's a totally true 100% real fact.
I think the 5000 miles figure is inaccurate......I know for a fact it occurs at about 500 miles and how I know my engine already failed. Not to worry, my wife pushes and I ride and visa versa........plus the added benefit is all that exercise we now get.
The only precaution with these engines is to follow the break-in guidelines which is to "mostly" keep it under 4200 rpms for the first 2K miles. Quite frankly, I think the break-in guidelines are a tad bit extreme. Although, I am not going to follow my SA's advice he told me to drive it like a stole it from day one..............
Also before you start pushing the Porsche allow the engine oil to get up to operating temperature ~194 degrees or about 4 or 5 miles.....
Porsche engines are tough.....