My r33 is only reaching half boost pressure I have a gizmo ibc ebc if I have it on the 4th setting which is 12 pound it will only rise to 6 pound and if I have it on setting 1 which is 7 pound it on reaches about 3.5 pound it was working fine up untill a few nights ago and it just went pear shaped and it has been a little bit rough on idle any ideas what it could be?