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Date: Wed, 28 Jul 2004 02:47:14 GMT
From: hohnospamlid.invalid (Goran Larsson)
Subject: Re: Saab 9-5: Another DI cassette story


In article <f21eg0hcjqovo6g85bjk6q1uip6brduohlnospamcom>, - Bob - <nonamenospamace.com> wrote: > Interesting. Do you know which models have the pre-cat ? That may depend on the market the car is sold in. I think model year 2000 9-5 Aero was the first here in Sweden, but today all petrol 9-5 sol here in Sweden should have it. If the exhaust pipe has a bulge just after the turbo, i.e turbo -> cat -> pipe -> flex-pipe -> cat -> pipe -> muffler -> pipe -> muffler -> tip, then the vehicle has a pre-cat. The purpose of the pre-cat is to reduce emissions just after the engine has started. The small cat close to the engine will heat up quickly, long before the ordinary cat, and will start doing its job perhaps minutes before the ordinary cat. -- G–ran Larsson http://www.nospam.com/saab/

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