Emission Results

[Mk3alan]

Just got a years MOT! (like waiting outside a maternity ward - but worse!)
Tester said how low the emissions were, looking at previous lots it seems consistent.

The CO was .224 , 3.500 allowed
The HC was 34 , 1200 allowed

Is this typical for a 2litre 8 valver?

Alan

[Cavalier342]

Yep, sounds like the motor is in good health. My 8 valver puts out very similar figures usually.

[James McGrath]

Are you absolutely sure you don't have a catalytic converter on yours?

[btcctroy]

Readings like that show you have a cat

[DiplomaXE]

Readings like that show you have a cat

Not true.
My XE decatted could beat those readings.
A lot of other NE's and XE also have.

Just proves it's running real nice. Good stuff.

[James McGrath]

These are the readings from my CD auto last year:

CO - 0.81%

HC - 91ppm

It had only done 37,000 miles at that point, it's on 40.500 now and it's MOT is due so I'll see what it gets next week.

[Mk3alan]

Definitely no cat, the tester said the figures would be good even with a cat!
Its now done 79000

Alan

[James McGrath]

It hasn't been tuned or upgraded at all has it because you seem to be getting extraordinary figures for fuel economy and now emissions.

[Mk3alan]

No, totally standard other than a 4 branch exhaust manifold which was recently fitted but previous mots show similar results with the original cast iron manifold.

Alan

[Rage]

wish my c20ne was like that it has always struggled to get through the emissions and used to have a new cat each year but I have made a type approved one fit so it will have that on it for the next mot that should sort her out

[btcctroy]

I just shows all engines are different.
Sure he hasn't stuck the probe up another exhaust
My impreza gets amazing results like that lol