well ok is my ecu 18psi (1.24 bar )limited

i push the turbo pressure down at 1.5 -1.6 bar the car goes better but still cutting at 4500 rpm

then push again the power down like 1.3- 1.4 bar it s runn perfekt but only somtimes cutting in the 3 gear full trottle
after some pushing my AFR still red and still on 22.33 for 3 seconde at then very lean and than continue normal driven again fine is this normal ? not enough fuel

my afr at idle is between 14-15

well i need a no limit ecu chip