i can confirm that my 05 exige air-con does not make any difference to the incoming air temp.
Has anybody come up with a fix or had it regased ?
A common fault on the early 'yota cars is that the pipes corrode just inside the sill aft of the front wheel arch. It can be fixed with an upgraded (rubber coated i think) replacement from Lotus. Expect to pay circa £600 at a dealer.
Have some tracer dye put though first to confirm.