I think I am right in saying this............................... :? but I could be wrong...
When they do a MoT emissions test, if a car fails the BET test (basic emissions test) they then have to select the vehicle and appropriate engine code from the computer database before they can do a full test. The database only lists cars sold within the UK, so does not include Pulsar GTIR, starlet Turbo etc etc so they have to select a default setting before they can carry on with the test, the good part is that this default setting is the same as pre 1992 cars (3.5%co?)...so in theory, for example, a 2001 jap/usa/australian import that is not on the database can pass at 3.5% CO
My brothers scooby was a k reg, but they werent imported till after k so it wasnt on the database so it passd wothout the cat.
Whether or not the tester wants to be an arse and argue this or just select a similar car is another matter tho :x