sykotoy

While in Audi today , a few fault codes showing small loss of back pressure...on inspection it appears that the flexible part of the exhaust( looks like its covered in wire wool webbing) just before the cat is fraid, and it appears maybe bottoming it out on a speed hump has created a small fracture in the pipe, as this is a flexible part im not sure if this crack can be wielded up or if it will need to be replaced?

i wonder if a slight drop in back pressure could result in power loss / overheating on the track, next week.?
Anyway going up on hoist at tyresome in darlinghurst on monday for a look (Audi dont wont anything to do with it). hopefully a wield or something will fix it or a custom piece to replace it could be built, hope i dont have to get it from milltek..... we all know how long that takes

Bob W.

do you have the option of putting the stock exhaust back on for the track session, if necessary?

maybe this happened when you 'took flight' a few months back.

mixja

Had my car up on the hoist the other day, I've only bottomed out once as far as I know, and the mesh on the flexi joint is damaged as well...but only surface damage at this point, so I'm lucky.

I don't think you'll have any issues with overheating, you'll lose a bit of power and mainly low torque...

Expensive to replace a down pipe for the sake of a damaged flexi joint!

sykotoy

Cant flexi joints be replaced, audi see a crack but coundnt detect any escaping air

Ubercar

Speed bumps and pro rally style behavior on my former driveway left mine quite frayed, but without obvious damage to the pipe section within. I made some calls and determined that a replacement joint could be obtained at modest cost and welded in if it becomes necessary. I keep an eye on it and try to be more careful around speed bumps and other obstacles.

bhvrdr

may even net some increase in tq/power

a4nik8er

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