1990 90 quattro 20v 2.3 exhaust
 

just purchased the beast and heard a wee blow from exhaust; on looking it
appears that the front half is a different diamater pipe from rear!; also,
when replacing worn o ring had to buy one from the 80 exhaust sytem!
so..has someoneone put an 80 front(or rear) half exhaust on; can i ignorer
the lamda sensors and cut out the cat?..any help[ appreciated....

Re: 1990 90 quattro 20v 2.3 exhaust
 

jakeydee wrote:
> just purchased the beast and heard a wee blow from exhaust; on looking it
> appears that the front half is a different diamater pipe from rear!; also,
> when replacing worn o ring had to buy one from the 80 exhaust sytem!
> so..has someoneone put an 80 front(or rear) half exhaust on; can i ignorer
> the lamda sensors and cut out the cat?..any help[ appreciated....
>
Not sure on the size issue but the O2 sensor information is required by the ECU
in order to manage fuel efficently so leave the CAT in.

Re: 1990 90 quattro 20v 2.3 exhaust
 

jakeydee wrote:
> just purchased the beast and heard a wee blow from exhaust; on looking it
> appears that the front half is a different diamater pipe from rear!; also,
> when replacing worn o ring had to buy one from the 80 exhaust sytem!
> so..has someoneone put an 80 front(or rear) half exhaust on; can i ignorer
> the lamda sensors and cut out the cat?..any help[ appreciated....
>
Not sure on the size issue but the O2 sensor information is required by the ECU
in order to manage fuel efficently so leave the CAT in.

Re: 1990 90 quattro 20v 2.3 exhaust
 

jakeydee wrote:
> just purchased the beast and heard a wee blow from exhaust; on looking it
> appears that the front half is a different diamater pipe from rear!; also,
> when replacing worn o ring had to buy one from the 80 exhaust sytem!
> so..has someoneone put an 80 front(or rear) half exhaust on; can i ignorer
> the lamda sensors and cut out the cat?..any help[ appreciated....
>
Not sure on the size issue but the O2 sensor information is required by the ECU
in order to manage fuel efficently so leave the CAT in.

Re: 1990 90 quattro 20v 2.3 exhaust
 

jakeydee wrote:
> just purchased the beast and heard a wee blow from exhaust; on looking it
> appears that the front half is a different diamater pipe from rear!; also,
> when replacing worn o ring had to buy one from the 80 exhaust sytem!
> so..has someoneone put an 80 front(or rear) half exhaust on; can i ignorer
> the lamda sensors and cut out the cat?..any help[ appreciated....
>
Not sure on the size issue but the O2 sensor information is required by the ECU
in order to manage fuel efficently so leave the CAT in.