You probably have most of the correct pieces to make this work. Measure your existing three bolt flange. The small 3 bolt exhaust flange has a 66mm bolt spread, the large 3 bolt exhaust flange has a 82mm bolt spread.

One option may be for you to get a different catalytic converter with a large 3 bolt flange which sounds like it would bolt right to the passat downpipe. (TT has these) You may be able to get a different 3 bolt flange for the catalytic converter as well.

It depends on your flange and pipe sizes both matching up, hope this helps some.

GBergthold


 I have the following exhaust bits for my 8v GTI:
 50mm cat back exhaust from TT.
Dual outlet manifold off of a '90 Jetta (looks like an O2 sensor fitting on it)
 Downpipe from a 2.0l 16v Passat
And what I'm _told_ is a catalytic converter off of a '90 Jetta (no O2 sensor fitting on it)

The guy that sold me the downpipe said it would bolt up to the 50mm catalyst from the Jetta. It DOESN'T. The 3-bold flange on the cat is too small to fit on the passat downpipe. My question is: should they fit together? Two different people have told me the 50mm cat will bolt to the passat downpipe. Was I misled? Does anyone have the correct downpipe?? I'm almost tempted to just say f-ckit and run w/o a cat, but even then I need to find a way to bolt the downpipe to a straight pipe. I _refuse_ to take this to a muffler shop, as the only one in town that is willing to work with customer supplied parts is run by a complete asshole.

 TIA,
 Pat Austin

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