Make Model Spec 911. 3.6I TARGA. 17 OPT911. 3.6I CABRIO911. 3.6I TARGA911. 3.6I TARGA-CARRERA911. 3.6I TARGA-CARRERA 4 911. 3.6I TARGA. 17 OPT911. 3.6I TARGE-CARRERA What should my pressure be?
