What should my pressure be? Make Model Spec ALPINA B10, 3.5 (635 CSI DONOR)ALPINA B7, 3.0 (630 CSI DONOR)ALPINA B7, 3.5 (635 CSI DONOR)ALPINA B7S, 3.5 (635 CSI DONOR)ALPINA B9, 3.5 (635 CSI DONOR)