Got my Coupe back from Vauxhall last week, after a cylinder head rebuild (because of a tiny oil leak) and I'm sure she's running very under powered.
Before third gear used to be very rapid and accelerating to 110mph easily in fifth was easy. Now, the fire in it's belly seems to have gone and the torque seems to have disappeared. The engine runs smooth with no apparent mis-fires.
Any ideas what VXL might have done during the head rebuild.