I purchased an ’87 944S with a 968 engine last year. The tach goes well past the red line and the car continues to pull at 7000+ rpm.
I can hear folks saying ‘Don’t do that!’…I know.
I was curious and had a look in the DME and saw an aftermarket chip with a white sticker that says 968 HEIM (written in pen). After some online searching, I wasn’t any wiser on who burned the chip or more importantly what the specs are.