Re: Heat Riser/Plug !?

[turbo@steelcity.net (Mike Goliwas)]

Mittal, Vikram (SUPP) wrote:
> 
> When I started my 1990 100 yesterday,  I felt that there was more noise
> than usual
> coming from the catalytic convertor area.
> 
> Suspecting a leak I took it to my local muffler guy who put it on the
> lift.  What we
> found is that there is a small tube on the cat. itself pointing to the
> back of the car.
> Some amount of exhaust gases are being expelled through this.
> 
> Now I am not sure if this is correct or not.  The muffler guy assures me
> that this
> is something to do with the engine and can only be fixed by an Audi
> dealer.
> Additionally,  he refer's to it as a "heat riser/plug" !?
> 
> I am surprised that I have never heard of such a thing and also that my
> muffler
> guy was actually turning away business saying that only a dealer can do
> this.
> 
> Can anybody shed some light on this ?  I am going to continue using my
> car
> as if nothing is wrong.  Is this a good idea ? The car has 104K miles on
> it and the
> original exhaust system and oxy sensor.
> 
> TIA.
> 
> Regards,
> Vikram.
	 Yes there is a cap on the cat.and it is replaceable probably a dealer
part only though.
turbo