What I like to do after break-in is open it up more and more and vary the rpms even more but higher in the rpm range. Everything will seat in so much better and quicker by stressing the engine progressively. These are fast cars so unless you stay in 1st and 2nd gear and scream the engine, it’s hard to really stress the engine out and stay anywhere near legal speed limits.
I turned the traction control off last night on my asphalt drive way that is long and goes up hill. I wanted to see how easy it would brake traction and at 1/3 throttle it took off and left a 10’ patch before I even knew it was letting loose and I am still breaking in my car with lower rpm’s. It was impressive to say the least but I now have two landing stripes on my driveway.
I have been driving awd 911’s for so long I forgot the joys of being a rwd hooligan.