Secondary cat questions

Yang N’ Bang · 10-16-2020, 10:48 PM

Hey guys, so now that the weather is finally cooling down, I can start tinkering with things again (and by things I mean exhaust) car currently only has the flowmaster outlaw axle-backs, was thinking about throwing in an x pipe then I remembered a 2nd set of cats are down there still, is there any point in keeping them or should I just cut them, toss em, and run pipe straight to the mufflers? Also to note I live in az, so no worries about any of ca’s fun rules.
-Thanks

Aragorn · 10-16-2020, 11:50 PM

I believe some members on the forum have removed them. Slightly louder with more gurgles and pops. So if passing emissions tests and warranty arent an issue I’d think your gtg. I will probably be doing this sooner rather than later. Also.

Aaron07 · 10-17-2020, 03:18 AM

I had the secondary cats removed. It is slightly louder.

Yang N’ Bang · 10-17-2020, 07:37 AM

Any sort of performance positives/negatives? Like I said, also going to throw in an x pipe, and I have 1 7/8 headers on the way.

Trak-Toy · 10-17-2020, 01:45 PM

Side note, don’t just ‘toss’ the secondary cats if you remove them.. take them to a metal recycler... they pay good money for them due to the metals Inside the cats..

Aaron07 · 10-18-2020, 01:50 AM

Quote:

Originally Posted by Yang N’ Bang

Any sort of performance positives/negatives? Like I said, also going to throw in an x pipe, and I have 1 7/8 headers on the way.

No performance gains that I can feel. I did it for the exhaust note. With headers and x pipe it should go together really nice. It will be loud.

Kmeleon · 10-18-2020, 06:50 AM

Quote:

Originally Posted by Trak-Toy

Side note, don’t just ‘toss’ the secondary cats if you remove them.. take them to a metal recycler... they pay good money for them due to the metals Inside the cats..

I've heard that, does anyone know how much they pay for them roughly? Just wondering if it's worth my time to cut them off the stock pipe laying in the basement currently before I throw the whole thing out.

Doc Oc · 10-18-2020, 10:35 AM

Quote:

Originally Posted by Yang N’ Bang

Any sort of performance positives/negatives? Like I said, also going to throw in an x pipe, and I have 1 7/8 headers on the way.

Long tubes will replace all 4 cats anyway so why bother?

10-16-2020, 10:48 PM	#1
Yang N’ Bang 17’ Hyper Blue 2SS Drives: 17’ Camaro 2SS Join Date: Nov 2018 Location: Phoenix Arizona Posts: 225 View My Garage	Secondary cat questions Hey guys, so now that the weather is finally cooling down, I can start tinkering with things again (and by things I mean exhaust) car currently only has the flowmaster outlaw axle-backs, was thinking about throwing in an x pipe then I remembered a 2nd set of cats are down there still, is there any point in keeping them or should I just cut them, toss em, and run pipe straight to the mufflers? Also to note I live in az, so no worries about any of ca’s fun rules. -Thanks

10-16-2020, 11:50 PM	#2
Aragorn Account Suspended Drives: Camaro SS 1LE Join Date: Aug 2018 Location: Phoenix Posts: 1,538	I believe some members on the forum have removed them. Slightly louder with more gurgles and pops. So if passing emissions tests and warranty arent an issue I’d think your gtg. I will probably be doing this sooner rather than later. Also.

10-17-2020, 03:18 AM	#3
Aaron07 Drives: 2017 2SS F1FTY Join Date: Feb 2020 Location: Fort Wayne, IN Posts: 347	I had the secondary cats removed. It is slightly louder.

10-17-2020, 07:37 AM	#4
Yang N’ Bang 17’ Hyper Blue 2SS Drives: 17’ Camaro 2SS Join Date: Nov 2018 Location: Phoenix Arizona Posts: 225 View My Garage	Any sort of performance positives/negatives? Like I said, also going to throw in an x pipe, and I have 1 7/8 headers on the way.

10-17-2020, 01:45 PM	#5
Trak-Toy Drives: 2023 SS 1LE Join Date: Mar 2020 Location: Virginia Posts: 270	Side note, don’t just ‘toss’ the secondary cats if you remove them.. take them to a metal recycler... they pay good money for them due to the metals Inside the cats..

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