Make Model Spec NV400. 2.3 DCI, BOX, BUS, CHASSIS CABNV400. 2.8T & 3.3TNV400. 3.5TNV400. L2/WB2 OPTNV400. L3/WB2 OPTNV400. L3/WB2, L4/WB3 OPT What should my pressure be?