[s-cars] bad cats

Sean Douglas quattro20v at telus.net
Fri May 14 23:30:54 EDT 2004


That's kinda of what I suspected. I hope its not the cat as the warranty
runs out in 3 weeks!

Sean



> -----Original Message-----
> From: Gabriel Caldwell [mailto:gabriel at ts.bc.ca] 
> Sent: Friday, May 14, 2004 3:39 PM
> To: Bill Healy
> Cc: s-car-list at audifans.com; Sean Douglas
> Subject: RE: [s-cars] bad cats
> 
> 
> I believe aftermarket chips are set to run a little rich in 
> order to maintain safety at high boost.  Perhaps all the 
> boosting during a hard run is causing your cats to complain a 
> little bit.
> 
> Gabriel Caldwell
> 
> -----Original Message-----
> From: Bill Healy [mailto:william.healy at snet.net] 
> Sent: May 14, 2004 3:18 PM
> To: Gabriel Caldwell
> Subject: RE: [s-cars] bad cats
> 
> Gas cap, AF and OS are good. Could be the gas I suspect.
> 
> -----Original Message-----
> From: Gabriel Caldwell [mailto:gabriel at ts.bc.ca]
> Sent: Thursday, May 13, 2004 3:32 PM
> To: Sean Douglas; Bill Healy; s-car-list at audifans.com
> Subject: RE: [s-cars] bad cats
> 
> 
> P.S. I have also heard a bad gas cap can cause that smell.  
> Not sure why or how though.  How's your air filter and oxygen sensor?
> 
> Gabriel Caldwell
> 
> 
> -----Original Message-----
> From: Sean Douglas [mailto:quattro20v at telus.net] 
> Sent: May 12, 2004 7:47 PM
> To: 'Bill Healy'; s-car-list at audifans.com
> Subject: RE: [s-cars] bad cats
> 
> When I'm pushing hard then shut off my car, the exhaust 
> smells like sulfur. Is this a sign of a bad cat or is the 
> fuel to blame? FWIW, I'm using Chevron 94 octane.
> 
> Sean
> 
> Sean Douglas
> 1997 Audi S6 - MTM Stage 1+
> 1990 Audi 90Q20V
> 
> 
> > -----Original Message-----
> > From: s-car-list-bounces+quattro20v=telus.net at audifans.com
> > [mailto:s-car-list-bounces+quattro20v=telus.net at audifans.com] 
> > On Behalf Of Bill Healy
> > Sent: Wednesday, May 12, 2004 4:11 AM
> > To: s-car-list at audifans.com
> > Subject: [s-cars] bad cats
> > 
> > 
> > I recall a while back, the subject of stinky exhaust came up.
> >  I too have been plagued by it. I've also noticed a rattling 
> > sound from within the cats upon acceleration. Our emissions 
> > program here in Connecticut, thankfully has been suspended, 
> > albeit temperarily, so I've got some time before I must 
> > replace them.  I've got 205K on the car, so I can't complain. 
> > I'm considering Stebro "high flow" cats. I've had good luck 
> > with their stainless exhaust. Any BTDTs or recommendatios 
> > with cats would be appreciated.
> > 
> > Thanks for the help.
> > 
> > Bill Healy
> > '93 S4
> > MTM 1+, H&R, bilstein, RS2 EM, stebro
> > 
> > 
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> > 
> 
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