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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
Posts: 3,861
That tube is part of Porsche's "special wishes" program. It's called the (well, I can't spell it in German) but provides additional boost by recirculating some of the exhaust pressure from the cat back to the intake of the turbo. Supposed to gain a bunch more newtons of force or something like that (call me if you want to discuss further, I also have some swamp land for sale real cheap).

Funny, I don't recall my cat having one on it, but then it's been years since I took the whole damn thing off. All the air pump 'save the environment' stuff is off as well, so for me it's a moot point. Plug it, forget it.
EDIT: So you forced me to go digging through my parts. Yepper, my cat has a tube as well, and it's plugged with a threaded bolt screwed into it. End of story.
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.

Last edited by mark houghton; 04-11-2013 at 08:02 PM..
Old 04-11-2013, 07:52 PM
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