JB4 on locked ECU

Did anyone tried a Piggyback on their locked cars ?
I´m owning an 330e and already bought a downpipe and I know you can drive is on Map2 safely but wanted to ask if there´s someone who already did/tried that ?

thanks

FEMTO unlock & Stage1+ would be a crazy output of 420hp and 700Nm, I´m hoping that JB4 could add just like 50hp and hide the errors due to the downpipe ...