Volvo 480 Club Europe

Hi,

I have a 1991 1.7i with a cat and lambda fitted (says catalyser under the rear light) does anyone know whether deletion of the cat and mid box will do any good? this is my daily as well, don't want and can't afford to loose too many MPG's! also if its a go ahead what should i do with the Lambda sensor itself?

Thanks, Fraser

I think since last year the rules for MOT changed regarding Catalysers.
If it was fitted as original equipment the vehicle has to have one, or it's a fail.
I think if you removed the internals you might get away with it, as on looks it still has one.

To be honest a lot of people think that fitting a new 'zorst' will increase the power.
It does but only if you change the manifold too.
If your willing to have a custom exhaust made you ideally want a 4-2-1 manifold.
a good custom shop will noise test it too, to make sure it isn't illegal.

can't comment on new MoT regs but if the vehicle is PRE CAT reqd and you carefully remove the Cat badge you should be OK? unless the new gucchi sysytem can check chassis numbers against build spec?

the cat on mine was jiggered due to engine being sh***d and when I put the cat on (after a failed MoT), performance dropped away


copied from section
7.3 Exhaust Emissions - Spark Ignition - General
The exhaust emission test
The catalyst test is part of the MOT test for most spark ignition petrol engined vehicles with four or more wheels first used on and after 1 August 1992.

http://www.motinfo.gov.uk/htdocs/m4s07000304.htm