Thanks russian!Beautiful gauges placement!
Ok ok, I'll get some logs first, maybe will scope the signal again with the extra thick ground cable and we can start from there.Do you have a log of the 6500 RPM issue?
hmmm... I don't think it could be the STM performance issue, but I can also try the test with two discovery boards.
It looks more like some hardware problem, signal filtering, some component maybe is soldered badly?
Or maybe its the ground cable of the crankshaft sensor? But this wouldn't make any sense because the car revs perfectly to 7000RPM on stock ECU.
As you all know since I have changed the crank pull-up resistor to 5k it seems a bit better, previously I was only able to rev to about 5000 RPM now it revs higher. Maybe I should try a 10k?
I'll spend more time on this problem probably this weekend and will try to show you all the results.