Over the last few days I've had an intermittent CEL and I took it across to Autoshield. They looked at it straight away and with the code reader diagnosed a left bank vario actuator failure. They cleared the fault and reset the clutch parameters but the fault came back as I was leaving. They cleared the fault and then took the black cover off the left cylinder head cover and found the electrical connector had come apart. They reconnected it and ....fixed. Result! The connection, apparently, has a habit of coming apart as oil comes up the lead and into the connector, a fact confirmed by Miles at Emblem (thanks guys). Something to be aware of if you are changing the spark plugs for Iridiums. Also, Marios and his mechanics are not impressed by the change to Iridiums and have had cars with misfires coming in as a result of their fitment. So, if you have a CEL, or misfire, after changing your plugs, bear this in mind. Also, the clutch now feels like a new one and the whole driving experience is much improved. Top guys. Thanks.
I can't recommend these guys enough for anyone who needs a specialist and it's always a pleasure to take my car in to them.