Author Topic: de-cating help!  (Read 3221 times)

Offline jamie_pyrite

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de-cating help!
« on: 24 February 2009, 14:39 »
Hi all, need new exhaust system for my Jetta but not bothering with a stainless system.

At the moment, it has a Cat, but it's a '91 so legally I can remove it!

I went to order a new system but order the straight through, rather than the cat. He said the straight through version is totally different - The cat version (1.6) is the same layout as the Gti, but is obviously a smaller diameter.

How can I get around this? What would I need to buy to replace the cat? :) Cheers!

sharpie

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Re: de-cating help!
« Reply #1 on: 24 February 2009, 15:04 »
local custom stainless place will make one.

Offline Ben Lessani

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Re: de-cating help!
« Reply #2 on: 24 February 2009, 21:32 »
Just fit an exhaust reducer at both ends ;) Then you can use whatever you like for the straight through.

It doesn't even have to be a performance part, a plain simple piece of mild steel or stainless will do the trick.

Where are you based, I've got my old 8 GTi centre box going spare - yours for £20 if you want it.

Offline Grum

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Re: de-cating help!
« Reply #3 on: 25 February 2009, 00:18 »
if your jetta is an 8v then the end of the downpipe should be the same diameter as the 1.6 driver one.

i found this when i fitted a 8v gti manifold and down pipe to 1.6 driver mk2, the pipe where the centre section joins the down pipe was the same size.

i think its only 16v which has the bigger diameter exhaust?

Offline Diamond Hell

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Re: de-cating help!
« Reply #4 on: 25 February 2009, 13:22 »
A cat on a 91 Jetta?

Seems somewhat unlikely, although not completely out of the ballpark.

What's the engine code?
Just because you're offended doesn't make you right.

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Offline dubber36

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Re: de-cating help!
« Reply #5 on: 25 February 2009, 13:35 »
Cars registered after August 1992 must have Cats.

You can de-cat yours no problem.
Red Mk6 gone replaced with a white Mk7 which has gone too. Green Mk2 here to stay.

Offline jamie_pyrite

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Re: de-cating help!
« Reply #6 on: 25 February 2009, 16:01 »
I thought the 1.6 diameter is slightly smaller than the 1.8 Gti?

Don't fancy getting a bespoke pipe made up as it costs! Trying to find a pipe that is the right length/diameter but has the tapered (right word?) ends

sharpie

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Re: de-cating help!
« Reply #7 on: 25 February 2009, 16:43 »
A cat on a 91 Jetta?

Seems somewhat unlikely, although not completely out of the ballpark.

What's the engine code?

wasn't it an optional extra?

Offline sidecarphil

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Re: de-cating help!
« Reply #8 on: 25 February 2009, 17:45 »
my ED1 had one as standard

but it was a german car where it was legal from 1988

now removed with a 4 branch and a stainless system

Offline Neo Badness

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Re: de-cating help!
« Reply #9 on: 26 February 2009, 00:04 »
Do what I did and rummage around in the skips outside your local fast fit or whatever, one mans trash is anothers treasure and all that.
 Cost me buttons to fab up my system for my old driver(I bought an ashley back box), painted the lot with hi temp paint lasted the life of the car. Used bits of volvo pipe amongst others, sounded unique (in a good way) too :grin:

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