MOT emissions question

[AlexClio]

During an emissions test at MOT i think im right thinking that the car has to produce under a certain percentage on idle, at xrevs etc. Is that percentage the same on different engines such as the 1.2 16v and 1.6 16v??
Any help appreciated.

 

[Batman]

i had 1.2 in mine and put 2.0 in i changed it on v5 but they said emmisions stay the same, i think when they test it at mot they just test it for what engine is under the bonnet?

 

[edde]

Registered between 1/8/92 and 31/7/94 - meter test CO<=3.5% HC<=1200ppm

Registered on or after 1/8/94 and an exact match can be found in the DTP data book or analyser database then CAT test to specified limits otherwise CO<=3.5% HC<=1200ppm

 

[SBV116]

Most modern vehicles have a Basic Emissions Test (BET test), co 0.20 max. HC 200 ppm max, lambda beetween 0.97-1.03! if they fail that, few do, it goes a bit different!

 

[Middo]

my old 1.2 got 0.2 on the emissions test and the examier said it was right on the limit of being retested massive sigh of relief so ill be taking the 172 back to the same tester lol

 

[SBV116]

think the limit rises to 0.30 when you do a full cat test!!

 

[AlexClio]

cheers for the info, so say if Batman's car with the 2 litre engine still had 1.2 written on the paperwork, would it pass MOT?