Hi,
I've had this 924 for a few months now and always thought I had a duct missing of some sort. There's a white plastic air intake attached to the front panel of the engine bay over to the left-hand side (if you were looking towards the engine). However, there's nothing attached to it. Photographs of 924 engines seem to show that this vent should have a large piece of ducting attached to it which goes down towards the bottom of the engine - what is it for?
Cheers,
Chris.