[NOTASIX]

One good thing about the modern Porsche cars, is the DME stores a lot of this information, and annotates the last hour that different ranges of overspeed occurred. It also manages how many ignition cycles had occurred at each range.
While you can overcome this data log, it is very difficult.

l pull DME overspeed reports from every car while they are being loaded on the transport truck, and l video doing this, sharing it with the owner. l do the same when a car arrives. It keeps everyone honest.... Just like employing a dash cam in every car, every minute that its being operated, or tested. Its what we have to do to protect ourselves, and to forcibly keep things for the record.

Earlier cars aren’t as easy to deal with, and they don’t keep logs.

The damaging thing about a misfire isn’t the misfire, its what cycle the cylinder is on when the misfire occurs. Heavy load, under acceleration with a misfire that occurs when a piston it travelling upward for the compression stroke is about as harmful as it gets to the internals. Like l said, l’ve had this snap a crankshaft before, and it was in 3 pieces when it came out of turn 9 at Roebling Road...