Missfire and fuel pump shut down

[Tobias]

I have installed Vems on a Bmw 6-cyl m30b34, running 60-2 and hall cam sync, 6 coils from m52.
Everything works fine until going up on boost when Vems is shutting down fuel pump relay, then i have to restart vems. After putting a wire over the relay socket i can hear a lot of missfiring(like one/two cyl. is loosing spark). i have tried going up in dwell to 6-7ms, now running 4ms. Lambda ~ 0.8-0.85 just before it happens.
Firmware is 1.1.43a2, have also tried 1.0.79a with exactly the same symptom.
Have also checked for trigger errors in bray terminal when using 1.0.79a but no errors.

Any ideas??

[gunni]

you are over charging the coil, keep it below 3.2ms
at full boost.