S8 Exhaust News
 

The exhaust in the old girl is all original and was ok if not a little tired round the edges.

After a blast full bore down a local dual carriageway I pulled off the slip road and my word there was a sudden change.

Gone was the normal exhaust note and replaced to what sounded like Thor gargling TCP from the middle of the car.

Had a look under the car and nothing blown, fallen off or split under there.

Not sure if a cat has gone or some baffles have failed but it now just sounds like I have a rather nice sports exhaust on there!

I may keep it that way for a while +++

Doesn't sound like a Cat's gone - that's not a pleasant sound. Enjoy the free upgrade +++

LMAO@ "Thor gargling TCP" :D :D

One of my cats went and it didn't make much difference at all, just a rattling at times and a tiny bit of extra grumble.

Though by the time I replaced it there were no more rattles and all. The supplier got back (it was an exchange process as is I think usual) was an empty metal shell - all the catalyst/ceramic was long gone down the exhaust pipe!

If your cat has gone get it replaced soon. Mine broke apart and rattled badly, one large honeycomb piece was moving around and partially blocking exhaust flow. Having seen it I wished I replaced it much sooner, must have been like this for almost a year.
Car drives much better now, must have been choking at low rpm. Very noticeable with a clutch.
You don't want exhaust gasses struggling to escape, potentially backing up to the exhaust valves and building up heat.
Hopefully yours has blown straight through removing any obstruction.

Worked this one out now, looks like one section has started to pull out the other near the centre.

The sleeve and clamp that was holding it clearly is failing hence the sound.

Nothing blown or broken just two sections slipping apart.

Anyway, I will put all back in I just wanted to know does anyone know the pipe diameter of a standard FL S8 exhaust pipe so I can order a new clamp?

Thank you as always ladies and gents.

The front ones are 60mm - 893253139B. They are about £25-30 I think.

Personally I only ever use genuine exhaust couplers because Audi pipes are slightly off 'standard' sizes and so usually right between sizes of aftermarket pieces which then either don't quite fit or don't seal properly. The genuine couplers just work first time and are much better quality anyway :)