What should my pressure be? Make Model Spec 147. 1.6 TWIN SPARK. 15 OPT147. 1.6 TWIN SPARK. BASE147. 1.6I TWIN SPARK COLLEZIONE147. 1.6I TWIN SPARK LUSSO. 15 OPT147. 1.6I TWIN SPARK LUSSO/ TURISMO147. 1.6I TWIN SPARK SPORT147. 1.6I TWIN SPARK TURISMO. 15 OPT147. 1.9 8V JTD / LUSSO147. 1.9 8V JTD. 85 KW147. 1.9 8V JTD. TURISMO147. 1.9 JDTM SPORT, JDTM SPORT Q2147. 1.9 JTDM 16V LUSSO, TURISMO147. 1.9 JTDM COLLEZIONE147. 1.9 JTDM DUCATI CORSE147. 1.9 JTDM MONZA147. 1.9 JTDM MONZA, DUCATI CORSA147. 1.9 JTDM Q2147. 1.9 JTDM, M-JET147. 1.9 JTDM, M-JET147. 1.9 JTDM. COLLEZIONE147. 1.9 JTDM. LUSSO147. 1.9 JTDM. TURISMO147. 16 OPT147. 17 OPT147. 17 OPT II147. 18 OPT147. 2.0 TWIN SPARK147. 2.0 TWIN SPARK -TI; LUSSO/SELESPEED147. 2.0I TWIN SPARK -TI 3 DR147. 2.0I TWIN SPARK LUSSO147. 2.0I TWIN SPARK LUSSO/ SELESPEED147. 2.0I TWIN SPARK TURISMO, LUSSO147. 2.0I TWIN SPARK, SELESPEED147. 2.0I TWIN SPARK. 3 DR147. 2.0I TWIN SPARK. 5 DR