Looking at my bentley for the 5ktq, it shows the max bar at .48 (1.48) (7.0psi) at -4 degrees F. Sounds to me like the early q's are well above the newer cars stock. Heck my stage II IA mods (including spring, glen) max me at 2.0-2.2... And the S4 is at 2.3bar max stock for only a measly 15secs... Jealousy gets me know where. Scott