I touch on this in the BP swap thread:
http://teamcapri.com/forum/index.php/topic,2864.0.htmlShort answer is yes, because we use a VAF meter that is volume based, it will run the BP correctly with stock XR2 injectors.
It's not ideal but it will get you up and running.
When I built the GTXR2 I used B6T electronics on the BP+T I have in it, it ran fine with good AFR's even at moderate boost levels
Long term I had plans to put my Megasquirt ECU into it but it ran well enough that I didn't bother at the time.