MOT Emissions Failure after RS2 Spec

[rynaqui]

Any advice on this? No cats, new exhaust manifold as well, exhaust is definitely not blowing. Don't have any figures as these were not provided..

It is running a bit rich though as I am running a higher octane I presume than what is required. Would too high an octane cause an emissions failure? Any advice appreciated!

[AQTdriver]

try a different MOT garage...

[rynaqui]

Is that legal?

[Michael S2]

You will fail MOT without a cat... even on standard S2. As said find a friendly garage or install sports cat.

[K Simmonds]

I guess it depends on what the Malta equivalent of an MOT requires, in the UK any car made after 1992/3 needs to have a cat fitted to pass unless you have a 'friendly' garage.

As far as I'm aware there's no requirement to take you car back to a place that's fail it, all that matters is that is passes somewhere.

[irishs2]

Was the RS2 changes to your ecu done with s2 maf or rs2 maf in mind?

[rynaqui]

Was the RS2 changes to your ecu done with s2 maf or rs2 maf in mind?

S2 MAF. Mentioned all spec to him including plugs, RS2 airbox, 1.8T coils etc

[prj]

Was the RS2 changes to your ecu done with s2 maf or rs2 maf in mind?

The MAF's are identical regardless.

I don't know what the laws are like in Malta. But in most European countries there is no way in hell you are legally going to pass MOT without a catalytic converter on an ABY engined S2.

[Rusty]

Without cats, CO should be in the 0.7% region, HC should be under 100 ppm. Need to get it on VAG com to see if anything is broken.

[prj]

Without cats, CO should be in the 0.7% region, HC should be under 100 ppm. Need to get it on VAG com to see if anything is broken.

0.7% will fail on CO in most european countries if the car ever had a cat fitted.

The requirements for a catted vehicle are:
CO < 0.5%
HC < 100
O2 < 1.0
Lambda: 0.97 to 1.03

[prj]

As to what you can do:

1. The correct way:
Install a 3" 100 cell cat into your exhaust.
2. The fast way:
Bribe the MOT guy *
3. The ninja way:
a) Pour E85 into the tank.
b) Get a spare 4 bar FPR and whack it a couple times with a hammer on the top to make it a 5 bar FPR and install it for the MOT.
c) Pass with flying colours with the MOT guy thinking his machine is broken.

Your choice.

(*) Not simple in all countries.

[rynaqui]

3 Step guide to passing your MOT, I love it!

Will have a go at a different MOT garage, I do think I know a guy that could help me out.

Not sure why but the first time I had MOT 2 years ago at the same garage it passed using the same exhaust system but then again the guy testing was different and this guy seemed kind of dodgy did not like the look of the guy at all maybe was having a bad day

[prj]

3 Step guide to passing your MOT, I love it!

Will have a go at a different MOT garage, I do think I know a guy that could help me out.

Not sure why but the first time I had MOT 2 years ago at the same garage it passed using the same exhaust system but then again the guy testing was different and this guy seemed kind of dodgy did not like the look of the guy at all maybe was having a bad day

If it passed before and did not this time there could also be something wrong. You need the readouts from the machine. When you go to the other MOT place then please ask for them. They do tell a lot.
Did I do your software or was it someone else? I am sorry, there's just too many cars to remember by now.

[irishs2]

My bad prj, though there was a difference because of r201.

[rynaqui]

If it passed before and did not this time there could also be something wrong. You need the readouts from the machine. When you go to the other MOT place then please ask for them. They do tell a lot.
Did I do your software or was it someone else? I am sorry, there's just too many cars to remember by now.

Will definitely get the readings next time, Will had the software done for me.

Thanks for all your help