Bigger cat more flow?
Thread Starter
|
Posting Guru
Joined: Nov 2006
Posts: 1,866
Likes: 2
Bigger cat more flow?
I need to put cats back on my true dual.the smell is awful! Would putting a 3 inch cat on a 2 1/2 inch system promote more flow? Or should i just stick with the 2 1/2 inch?
Former ******
Joined: Nov 2004
Posts: 4,901
Likes: 2
From: Salt Lake City, Utah
Between the 2.5" and 3" I don't think you'll see a whole lot of difference in loudness. Yes the 3" will be a tad louder, but I think it would be hard to tell.
The cross section of the catalyst itself would be more of concern to me. There are only two ways to get more flow out of a cat. The first is to increase the cross section. W use this method a lot on trucks since the large casing also helps reduce raspiness and causes a deeper tone shift. The second is to use a lower cell density catalyst. This method works well, but the cost of the catalyst is much higher, and this option should only be used if smog legal racing is your thing.
The cross section of the catalyst itself would be more of concern to me. There are only two ways to get more flow out of a cat. The first is to increase the cross section. W use this method a lot on trucks since the large casing also helps reduce raspiness and causes a deeper tone shift. The second is to use a lower cell density catalyst. This method works well, but the cost of the catalyst is much higher, and this option should only be used if smog legal racing is your thing.
Thread
Thread Starter
Forum
Replies
Last Post
Skandocious
1987 - 1996 F150 & Larger F-Series Trucks
11
Apr 29, 2007 06:36 PM
1986broncojoe
1978 - 1996 Big Bronco
1
May 11, 2004 09:33 AM
