i noticed in 1st i hit the fuel cut off at 6600rpm but all the other gears pull hard up past redline to 6700 ,as per specs max horse power is supposed to be at 6500rpm and redline at 6600rpm.does anybody notice this?

 

that creates the impression u hit the cutoff at lower revs....in first gear the engine revs so quickly that some tachometer lag is likely. BMWs are very prone to this...other cars more or less so but to a degree, all cars demonstrate this in 1st gear.

 

I noticed that when I installed my shift light I couldn't get the rpms to match right. So, once I got my OBD-II software I noticed that the ECU is showing 300-400 LESS rpms than the tach. My tach reaches as high as 6700-6800 rpms even if I slowly increase till I bounce the rev limiter, where as the highest I've been able to consistenly record on my OBD-II is 6438 rpms.

Also, your speedometer is high by 2-3 mph at 60 compared to your ECU. SteVTEC claimed this is due to speeding ticket liability.