Removing Cats/Precats?
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Removing Cats/Precats? (marthpodi)
"Should" is a matter of objectives.
The usual procedure is to replace the front Y with a mandrel-bent unit and the stock main cat with a hi-flow 3-stage cat. These two mods result in more HP and a "sportier" sound.
The usual procedure is to replace the front Y with a mandrel-bent unit and the stock main cat with a hi-flow 3-stage cat. These two mods result in more HP and a "sportier" sound.
Le Mans Master
Joined: Dec 1999
Posts: 8,540
Likes: 1
From: And on the fifth day, subpoenas were served to Obama senior staff
Re: Removing Cats/Precats? (FlyboyZR1)
It's mandrel bent, but could use some clean up at the Y joint. I had to return mine as it did not fit. However, have not heard complaints about this recently.
Intermediate
Joined: Aug 2002
Posts: 34
Likes: 0
From: Chicago Illinois
Re: Removing Cats/Precats? (marthpodi)
I just replaced mine with a kit from Eckler's, no precats. So far, so good. I've had it on for over a month with no problems. It is louder, but I like it. Oh, I also passed Illinois emissions with it. Do it! :chevy
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Removing Cats/Precats? (Lexdog)
I got the mandrel-bent Y from MAD a few years ago and the workmanship was so bad that I returned it and had one custom built at a local exhaust shop.
I too recently easily passed a dyno emissions test in OH with my mods.
I too recently easily passed a dyno emissions test in OH with my mods.
Team Owner
Joined: Oct 2000
Posts: 44,772
Likes: 1
From: 63.8% of all statistics are made up on the spot.
St. Jude Donor '08-'10
Re: Removing Cats/Precats? (marthpodi)
I had no trouble from the Ecklers front 'Y'. It will give you a louder sound in a good way and you also might start getting the dreaded code 32 at highway speeds.
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Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: Removing Cats/Precats? (65Z01)
I retained the stock Y pipe and had the pre cats removed and replaced with "test pipes" when I had the high flow cat installed. I do have the dreaded code 32 from time to time.
