[edwinwilks]

Yup, I tidied up the piping a bit, the airbox is drawing in cold air anyway as noted by someone else. I did a Pedros style one - 2 3" rubber elbows and a section of 3" ABS pipe. The elbows are critical - long sweeps don't fit and the 3" is a bit big - I trimmed mine down to the reduced section and warmed them in boiling water before fitting so they stretched enough to fit the airbox and the throttle body. Now they've take a set they fit very well and seem to stay on with screw clamps.

Here are the results, not quite what I expected...:-

It's a bugger to get the old one out.
It's possible to burn more fuel but the fuel efficiency figures in normal driving are unchanged.
Freeway speed driving (and this is the weird bit) is actually quieter, by a fair bit.
It seems to have improved the feeling of urgency the engine has (is this what people mean by 'improved throttle response'? - if so it's true.)
Power gains are minimal if extant at all but the smile inducing induction sound is great