That's funny, I was sitting at a light yesterday and looked down to see 161616 kms.
So your last timing sheet.. it shows values to 7400rpm. So when you hit 8k+, i'm assuming it uses the 7400 value?
My car seems like it just does not want to rev much past 7k. It's either cam timing, ignition timing or the turbine is too small. Looking at your timing values, I really need to ramp mine up in the higher rpms.