granturismo s

  1. AKCH01

    Granturismo S 2011 F1 Exhaust Valve Closed in SPORT mode

    Hi all, New owner of a 2011 Granturismo S MC Shift circa 21k miles Sport button has been working fine until I got in this morning to find the sport button not opening the exhaust valves. When vehicle is off they are open. They stay open during startup and close once there is engine vacuum...