I spoke to one of the inspectors at Welshpool Technical Section today and have been advised that only cars that are modified (i.e. aftermarket exhaust/FMIC/intake/cams/ECU/etc) will require to have the IM240 Emissions Test conducted.
I spoke to a customer who owns a stock-standard XR6-Turbo and has to go do the test, however I managed to get him out of doing the test due to his car being factory specifications.
So basically, if your car is stock-standard, you will not have to go and do the emissions test....
Also, not all modified cars need to have the IM240 Emission Test conducted as of yet - my car passed pits 2months ago and has a turbo-back exhaust, FMIC, etc. However, I believe that as time passes, it will be mandatory for all modified cars that go over the pits to have this emissions test conducted. As more and more cars go for the test, the testing will become cheaper - I still feel sorry for you guys....it's bloody expensive and from my point of view, just a load of wank.