Some will run fine some may be a bit close to the edge.
It depends on what ecu its running as the fuel and ignition maps vary dramatically between years.
A Z4 or a 6K are probably the safest of the bunch.
The main difference is that you may suffer a touch more lag that a remap will correct. The remap will also release the benefit of the fmic.
Injectors and map sensor will then be your limitting items as both won't allow any more then 1.2bar. Only an esl remap or new issue can address this.
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