Smec fueling after 5200 rpm.

I have read somewhere that after 5200 rpm that the injectors go to max duty. I have been unable to find this info again. If this is true, does the mptune tuning app disable this function? I have noticed in my tuning efforts in the past that mpscan shows fuel in the 10.5 range above that rpm and attempts to change it yielded no change.

maybe on a TIII with stock injectors. Not on a 2.5 t2 with larger than stock injectors. If you are too rich about 5200, pull some fuel out of the pumping efficiency table around that RPM. (move the dots down)

Brian