1.7 N/A DECAT

For those of you not faint of heart, who believe the Volvo 480 should have more torque and horsepower, find all you need to know in here.

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cranna21
Can tell where the 480 was built
Posts: 313
Joined: Sat Jan 11, 2014 3:44 pm
Location: Aberdeenshire, Huntly

1.7 N/A DECAT

Post by cranna21 » Wed Apr 16, 2014 12:13 pm

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
'91 480 ES 2.0l 16v 'Williams' Conversion - 212bhp/230nm
'90 940 GL 2.0l Estate
'08 XC90 D5 SE Premium

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Slash01
Knows where Volvo is from
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Joined: Tue Jan 18, 2011 5:28 pm

Re: 1.7 N/A DECAT

Post by Slash01 » Wed Apr 16, 2014 12:40 pm

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.
There are always ample warnings and there are always subtle signs,
And you would have seen them coming but we gave you too much time.

Alan 480
480 Is my middle name
Posts: 1489
Joined: Sun Aug 28, 2011 9:03 am
Location: Aberdeen

Re: 1.7 N/A DECAT

Post by Alan 480 » Sun Sep 14, 2014 6:19 pm

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
Alan

480 ES 2litre 'Celebration' ? , C30 1.8ES, SS1

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