If you are using stock fpr, 0.7188 should be fine.
I've flow tested my injectors before installing and all of them was 450cc at 3 bars.
Was using 0.7188 without problems for a year, before switch to 4 bar fpr.
Check if all the plus cables are in place. It could be also your com ports or the flasher set up if you are using the Tuner pro. Try to flash with Motronic Suite.