Getting turbo back custom ss exhaust fitted as stock one is on last legs.

Nearest custom exhaust place are a bit confused without inspecting first what downpipe and as they cannot get anywhere near the price ebay Toyosport ones here they suggested I bring one in and they will do the rear pipework/ backbox etc.

 

STAINLESS STEEL T-304 EXHAUST DE-CAT DOWNPIPE DESIGNED TO FIT AUDI A3 180HP AND AUDI TT MK1 180HP TURBO QUATTRO

Features:

• Our products are 100 % Brand New and Boxed.
• 
  
• Mandrel Bent T-304 Stainless Steel.
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• CNC machined 3/8" steel flanges
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• Included 2.15" adapter allows fitment of any cat-back
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• This exhaust downpipe's mirror polished, 3" all the way.
• 
  
• Straight-through design enabled to improve horsepower and overall performance
• 
  
• Improve throttle response & Horsepower by 7-15 BHP, Dependant upon engine mods
• 
  
• Allowing more airflow through the pipe
• 
  
• Bolt-on design, easy installation
• 
  
• Very Light weight
• 
  
• You will get exactly which the above pictures shown.
• 
  
• Professional fitting recommended.
• 
  
• All Gaskets are included
• 
  

The smaller part is I think the adapter they mentioned in the blurb above. I am getting 2 1/2  cat back , will this part allow fitting to the 2 1/2" without restriction? Looks like it steps down a couple of times.

Also regarding putting back the original cat for MOT time is it easy to get everything lined up to fit again?  Also should I go to the trouble of having fitted new turbo studs to facilitate changing over?

 

Considering getting a 200 cell sports cat installed and be done with it but not sure how awkward getting one fitted to the Toyo downpipe is.

My new insurance quote allows up to 250bhp so will probably press ahead and keep the car for a few more years.

 

Having written this will have probably convinced myself to  travel the extra miles and go see Prospeed Cardiff and get the whole lot fabricated even if cost in time and money is more.

 

 

That downpipe is a 3" one and then has that small reducer that should fit into you center box. It probably start of 2.75" and drop down to 2.15" to slot into a centre section . Normally those are used to join to a std exhaust which is smaller than a typically stainless 2.5" system.

 

I have a Toyo Downpipe on mine and they are well made, but i did get mine extended and welded as mine would not fit to my system.

 

few pics

 

 

 

 

 

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you want just a custom fab downpipe to the standard CAT as this is the most restrictive bit.  The downpipe that is as the twin CAT on the 4x4 can flow 300BHP very easily.

 

If you want to go decat then the option I was looking at was to have a full stainless system with an empty CAT section just for the MOT visual check.  most good stainless fabricators can price this for you.  if you need to talk to a good fabricator give ProSpeed in Cardiff a call and ask to speak to Charlie.  He used to have a Leon so he knows the 1.8T well

also I think that picture is for the 150BHP not quattro as the down pipe finishes with two triangular flanges to match to the CAT like this one on the top

 

Edited 25 May, 201412 yr by karlbar2k

Spoke with Prospeed today. Simplest solution is 3" downpipe , single 200cell sports cat (I think 5" was mentioned) into 2 1/2 back.  Going to keep it quiet with hidden  twin exit pipes. Booked in for next week.

M

Sounds good, I would be tempted to have the cat hollowed out though

Wonder why Skoda went for the twin cat design on this car? Only thing I can think is to keep ground clearance under the car. I did mention I liked the extra ground clearance on the car. Cat size chosen as to be pointless going bigger with 2 1/2 back. Maybe I should have mentioned going straight to stage 2 in next month or so.

I would like to have kept the twin cat but fair bit more fabrication for the down pipe etc. Ideally would haveliked stainless copy of existing twin cat with bigger downpipe and twin sports cats.

karlbar2k am I right in thinking you would be OK without a cat (or hollowed out) as your car would pass MOT on LPG and visual check ?

Mark

Yep

As long as the thing is running right.

Yes it would. LPG makes it easy