de-cat

Post Tue Jun 21, 2005 9:00 pm

think this is the right place for this question

I want to de-cat my exhaust

I have a 1992 318i cab

now i have been asking around at some exhaust places
for a non cat front section (from the manifold back)
and i keep getting the usual crap from them saying that
being as my car is fitted with a cat from the factory it must stay that way

now when i took the car for its MOT they tested it in the old fashion way
I.E non cat saying its before they were compulsary

now my question to you guys is
does anyone know if i can de cat my system without breaking any laws
or was it an option when my car was made which would then mean it does not need to be there (by law)

any help on this would be greatly appreciated

Post Tue Jun 21, 2005 9:03 pm

I think the law is if the CAT is fitted on/after August 1992 it is a requirement, if it is fitted from new before this date it can be removed.
My 1990/G had one, doesn't any more!

Post Tue Jun 21, 2005 9:06 pm

Your right on the change over year so if ur cars fitted with a kat it should b tested as a kat and if it aint got one then should b tested as not havin a kat fitted (fit a stainless non kat sys and ur laughin)

Post Tue Jun 21, 2005 9:10 pm

Jimbob wrote:I think the law is if the CAT is fitted on/after August 1992 it is a requirement, if it is fitted from new before this date it can be removed.
My 1990/G had one, doesn't any more!

well my car's manufacture date is 03/92

so going by this I should be ok to de-cat it then

its just all the b*****d places we called today
keep saying if its fitted it has to stay

sh1t heads probably just trying to make some money out of me

Post Wed Jun 22, 2005 8:43 am

The requirement date is 1st August 1992.

Post Wed Jun 22, 2005 8:21 pm

thanks for the advice fella's

am definately gonna do this

would i be looking at any sort of gains by removing the cat

Post Wed Jun 22, 2005 8:24 pm

it will certianly go better u may see a fiew bhp gain

Post Wed Jun 22, 2005 8:28 pm

TOURINGDADDY wrote:it will certianly go better u may see a fiew bhp gain

well that would be cool
its been chipped already (by Ant)
am looking at getting a different rear section of the exhaust
and a big bore throttle body
and i think it should go pretty well then

Post Thu Jun 23, 2005 1:36 pm

Jimbob wrote:I think the law is if the CAT is fitted on/after August 1992 it is a requirement, if it is fitted from new before this date it can be removed.
My 1990/G had one, doesn't any more!

did you just replace the cat? if so what did you do to the lambada sensor and also did you change the ecu?