[JayRS3]

I tried to change the nuts on mine for some copper flash ones to make the change over a simple task before MOT however seems as though they have already welded onto the bolts after a few months of fitment. Definitely some grease will be applied next time.

[RS3JET]

Jay mine past MOT with second cat bypass left on, was not a problem

[JayRS3]

Jay mine past MOT with second cat bypass left on, was not a problem

Hmm... Need to find a local garage then to do it instead of main dealer.

[peazz]

All fitted, hardest part is getting the top nuts out...

Definitely a worthwhile mod..

[RS3JET]

Jay don't know where you are in kent, but I used just MOTs in Tonbridge

[JayRS3]

Jay don't know where you are in kent, but I used just MOTs in Tonbridge

I'm in Rochester I haven't got an issue travelling there if saves the agro of swapping.

[45bvtc]

For mk1 but isn't going to be too far if not the same for mk2. Courtesy of John.

1) The secondary-catalytic exhaust pipes are different; one straight and one bent: the straight pipe is fitted to the 'passenger' side of the car and the bent pipe to the 'driver' side

2) Each of the secondary-catalytic converter/exhaust pipes are connected to the downpipes with three M8 nuts and to the rear exhaust silencer with sleeves that are fastened with two captive bolts and nuts

Note: The secondary-catalytic converter/exhaust pipe(s) have three M8-studs fitted - and as Audi have been sufficiently thoughtful to use mild steel nuts to these mild steel studs then more than likely your nuts will have seized onto the studs; mine had at 3000 miles

REMOVAL:
3) Use an M13 ring spanner and release the nuts from the straight/nearside pipe; don't worry if the studs shear/break as you can drill the secondary-catalytic converter/exhaust pipe flange a 'clear' M9 diameter later

4) Release the 2-bolts securing the rearmost exhaust pipe sleeve (no need to remove the nuts just release so as to release/rotate the sleeve) and pull the sleeve toward the front of the car - the secondary-catalytic converter/exhaust pipe is now free to remove

5) Pull the secondary-catalytic exhaust pipe toward the back of the car and remove; store safely

CAUTION: DO NOT contaminate, touch, whatever, the core of secondary-catalytic converter

6) Remove the gasket and store safely

7) Repeat exactly the same process on the bent/offside pipe

8) Carefully clean both gaskets; if intact there's no reason why they can't be used again; alternatively, buy two new ones

REFIT:
9) Apply a thin smear of exhaust gasket sealant to one 3-pin gasket

10) Fit three M8 x 30mm long setscrews - apply as much Copperslip to the setscrew threads as you can - to the 'offside' downpipe flange and fit the gasket

11) Apply a thin smear of exhaust gasket sealant to both ends of one exhaust pipe sleeve and fit the sleeve to the by-pass pipe: DO NOT tighten at this stage

12) Assemble the by-pass pipe to the M8 x 30mm long setscrews at the downpipe end and loosely fasten with M8 spring washers and M8 nuts. Slide the exhaust pipe sleeve over the exhaust silence pipe making sure the sleeve is central over the gap between the pipes: DO NOT tighten at this stage

IMPORTANT: Make sure to rotate the bend in the pipe to the ###side

13) Nip the 3-setscrews/nuts at the front end

14) Nip the 2-bolts/nuts at the rear end

15) If all looks properly aligned tighten all 5-setscrews/bolts/nuts

16) Repeat exactly the same process on the straight/nearside pipe

17) Once done fire up the quattro and allow to warm through: check for exhaust leakage while on engine 'idle' and if all ok take the car onto the road and allow the engine to come up to a normal working temperature during which time the sealants will 'cure

 

I thought I recognised 'some' of them words, Jay; happy here that it was of use  

[RS3JET]

JUST MOTs  Tonbridge  01732 773345

                      Tonbridge Wells  North Farm  01892 544637

[Kelza]

Hi John hope your good

[45bvtc]

Hi John hope your good

 

Not as good as I was, John, thank you; but will be OK, surgery (robot-assisted laparoscopic radical prostatectomy) imminent: PM sent...  

 

Every male here needs to be aware of that nasty little gland hiding under yer bladder...

Edited by 45bvtc, 25 April 2016 - 04:53 PM.

[RS3ER]

Had the milteck secondary downpipes fitted on last Friday has anybody noticed the 2 pops have gone on cold start up also I think there less pops & bangs they sound more deeper & louder

[monopole]

Don't get pops on cold start up, I don't. Only when warm/recently run.

[RS3ER]

I have sports exhaust it definitely did pop on cold start before the downpipes was fitted on can anybody confirm this without the secondary downpipes fitted on their car.monopole I've noticed it pops once it's recently run its quite annoying I actually like the pops on cold start up

[monopole]

I have sports exhaust too, and mine doesn't pop on cold start up.

[monopole]

Mine is just loud rpm idle for about 15 or so seconds then quietens down, when starting from cold.

Edited by monopole, 03 August 2016 - 02:35 PM.

[RS3ER]

Monopole have you fitted the milteck secondary downpipes on your exhaust

[monopole]

No bud.

[RS3ER]

Ok mate if you can when you use the car next can you try this please & when I'm switching the engine off its in dymanik mode.

[monopole]

In about 5 mins I'm leaving work where it's been parked since 6.50.

I'll pay particular attention to the start up and post back whilst I'm sat in the car 👍

[RS3ER]

🙈🙈
Goodman thanks mate