The gap should be ok, I ran .025 on my plugs in my b16 with no issues at 15psi. If anything a larger gap will start to break up at higher boost levels, not when you take off from an idle. It does sound like a rich map...have you wideband tested it yet? Maybe injector latency too at idle.

 

idend with the new map i just made before i sent you the burner is pig rich at idle like 10.2-10.6 but seems fine of idle. other maps are 15.0-15.6 at idle but all seem fine while normal driving they are like 11.0-12.6 which is decent i have checked to make sure the injectors are firing by removing clips at idle and no problem there.