You're car is running pretty rich for some reason. To get the second fast idle test result you have too sit at 3000rpm for 3 mins so the car should have been hot enough.
There are multiple things that could make it run that rich so it's very hard, if not impossible to diagnose this without seeing the car personally and looking at it myself.
You say it's got a turbo kit? What management is it running? I would Reccomend taking it too a local tuner or something and getting someone that knows what they are doing to have a look. as it won't do you're engine any good running very rich. You may be lucky it may just be the lambda sensor but it's still worth getting someone to look at it.
miles wrote:Mine never got tested for emissions . garage said it was cos they didn't have it on there database, however i think they knew it would fail as its been de-catted and there abit more lenient with imports as the owner has a few.
This is a bit of a grey area with emissions on import cars, the mot manual says you have to test an import car according to its age BUT if a car fails the first fast idle test then you have to find and select he vehicle on the emissions computer before it will let you do a second fast idle test, and import cars eg;altezza aren't on the emissions computers so you're physically not able to select and thus not able to go through and do a second fast idle test and generate a pass/fail. So what most people do is just test it as a pre 92 non catalyst vehicle which the limits are a lot higher for (3.5%co and 1200ppm hydrocarbons).
Sorry about the long ass explanation, hope it makes sense.
If you hadn't guessed I'm an mot tester