yep, all engines after 1993 must have a CAT, most cars that should have CATS wouldnt pass the emmisions test without a CAT since they are stricter

Anyway, MOT states that if a car has a CAT fitted as standard, it MUST have one for the rest of its life, regardless of emissions!

Dave

So emissions are reduced by 105-110% on vaux engines?!?! he he

Dave

What engine you got? Ive just fitted one of those ecotek things to mine.. supossedly reduces emissions by up to 90% (about another 15-20% on vauxhall ecotec engines) do you think ive got any chance with this and no cat?

mine has no CAT and will pass MOT

the joys of old engines :D

What so they cant screw you there and then?

their u go

Well if you get a roud side test all they will do is make you take it for a proper emissions test, so just go sort it out take it for the test and put it back.

well i know no one thats had that done, ever, so im gonna take the risk

See I would do that but id be worried of getting a road side test..

i have no idea, but i think they are expensive, im just gonna get a de-cat pipe £55 i think from magnex, then just put the cat bk on come MOT time, and take it bk off after, its only a 5 min job

Cool..how much can you expect to pay for one?

right as long as ur corsa is within EU emmissions it will pass, so u wont fail if u dont have a cat, but u will if u dont cos its the cat that keeps u under the limit

sports cats will pass a emmissions test, and they are better cos they let the gases flow faster through them, hense its less restrictive

What about these "fast-cats" ive heard about? Will they still pass? Are they much better than standard?

Technically you need a cat. No Corsa will pass the emissions test without a cat anyway.

To pass your MOT to you have to have a cat or do you just have to pass the emissions test?