What is a pre catalytic converter?

flipwhip41 · 10-08-2008, 10:37 AM

As the title says What is a pre catalytic converter. My mid pipe on my 90gt looks like it has the cats removed but there are still catalytic converter looking things up closer to the headers. Any help would be great.

Unit 5302 · 10-09-2008, 04:33 AM

There are 4 catalytic converters on your car, but that's less than the 6 found on SN95 5.0s.

Anyway, from my understanding, the pre-cat's job is reduce and break up the nitrogen oxides in the exhaust, while the main cat's job is to oxidize the hydrocarbons and convert the carbon monoxide to carbon dioxide.

The pre-cat's essentialy make the job easier for the main catalytic converters.

10-08-2008, 10:37 AM	#1
flipwhip41 Registered Member Join Date: Oct 2008 Posts: 2	What is a pre catalytic converter? As the title says What is a pre catalytic converter. My mid pipe on my 90gt looks like it has the cats removed but there are still catalytic converter looking things up closer to the headers. Any help would be great.

10-09-2008, 04:33 AM	#2
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Re: What is a pre catalytic converter? There are 4 catalytic converters on your car, but that's less than the 6 found on SN95 5.0s. Anyway, from my understanding, the pre-cat's job is reduce and break up the nitrogen oxides in the exhaust, while the main cat's job is to oxidize the hydrocarbons and convert the carbon monoxide to carbon dioxide. The pre-cat's essentialy make the job easier for the main catalytic converters.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Catalytic Converter	apowers1	Small Ponies	1	06-26-2001 03:29 AM
Catalytic Converter	apowers1	Racer's Club House	2	06-16-2001 06:06 PM
Catalytic Converter	apowers1	Windsor Power	2	06-05-2001 03:33 AM
Catalytic Converter	apowers1	Modular Madness	1	06-04-2001 08:17 PM
Catalytic Converter	apowers1	Classic Mustangs	1	06-04-2001 08:10 PM