Don't want Headers, But can I just cut out the Cats? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

speed racer · 10-22-2010, 12:58 AM

I have the Flowmaster American Thunder Cat back exhaust and I love the sound. My issue is that I just installed a TVS 2300 Maggie and I need the exhaust to breath a little more.. My local tuner said I could just cut out the CATS all together and that would help out alot.... I have the stock manifolds and the maggie needs a little more air space..

Will the exhaust be real loud without the cats?

Will it still sound good with no cats?

Does anyone have a sound clip of no cats with stock mainfolds?

Thanks for you Opinions

v6sonoma · 10-22-2010, 01:01 AM

As long as you don't have to pass an emissions test then it should be fine. It will be louder/higher flowing but you will get a CEL so it will need a tune still.

Revo1 · 10-22-2010, 01:08 AM

New midpipes are what you need. I'd go hi-flow cats if you have the cash.

BowlingSS · 10-22-2010, 07:29 AM

You really need headers IMO.

Bill

RedRyder · 10-22-2010, 10:31 AM

If you don't want headers I think high flow cats are the next best choice.

PAUL SS · 10-22-2010, 10:36 AM

Removing the cats is a federal offense!

Iwantone2 · 10-22-2010, 10:56 AM

Question related to this topic:

What's the difference between getting the midpipe, rather than just swapping out the current cats for high-flow cats?

RedRyder · 10-22-2010, 02:30 PM

Quote:

Originally Posted by Iwantone2

Question related to this topic:

What's the difference between getting the midpipe, rather than just swapping out the current cats for high-flow cats?

Do you mean the difference between a midpipe with high flow cats and just cutting off the stock cats and replacing them with high flow ones?

The midpipe option would be completely bolt on so easier installation and you'll probably throw a CEL if you just cut/replace the cats.

Iwantone2 · 10-22-2010, 04:58 PM

Quote:

Originally Posted by RedRyder

Do you mean the difference between a midpipe with high flow cats and just cutting off the stock cats and replacing them with high flow ones?

The midpipe option would be completely bolt on so easier installation and you'll probably throw a CEL if you just cut/replace the cats.

Yes, that was my question. Thanks!

I don't actually intend on doing this, just thought I would help out the OP.

SGOS252382 · 10-22-2010, 05:08 PM

ADM and some other vendors sell race pipes that take the place of the cat section. High flow cats are expensive. Its cheaper to just replace the stock cats with a race pipe (go catless) if you're looking for cheap HP. Then when you have emissions testing, etc you can just put your cats back on.

danhr · 10-22-2010, 05:12 PM

here's a dumb question

Why don't you want headers?

Merc · 10-22-2010, 06:36 PM

You need to quit kidding yourself and put on a good exhaust system and headers to go with the maggie.

zirotti · 10-22-2010, 06:46 PM

If you are going to go the work of putting on new cats and still needing a tune, might as well go the hole shootin' match

speed racer · 10-23-2010, 12:02 PM

I don't want headers because they are too loud... I am going to keep the stock manifolds and just remove the cats I think.

10-22-2010, 12:58 AM	#1
speed racer Speed Racer Drives: 2010 SuperCharged SS/RS Join Date: Dec 2009 Location: Edmond, Ok Posts: 185 View My Garage	Don't want Headers, But can I just cut out the Cats? I have the Flowmaster American Thunder Cat back exhaust and I love the sound. My issue is that I just installed a TVS 2300 Maggie and I need the exhaust to breath a little more.. My local tuner said I could just cut out the CATS all together and that would help out alot.... I have the stock manifolds and the maggie needs a little more air space.. Will the exhaust be real loud without the cats? Will it still sound good with no cats? Does anyone have a sound clip of no cats with stock mainfolds? Thanks for you Opinions

10-22-2010, 01:01 AM	#2
v6sonoma Drives: 2010 SS RS Join Date: Jun 2009 Location: Providence, RI Posts: 8,108 View My Garage	As long as you don't have to pass an emissions test then it should be fine. It will be louder/higher flowing but you will get a CEL so it will need a tune still. __________________ Mods: BBK Intake, BBK LT's and High Flow Cats, Corsa Cat-back exhaust, Hurst short throw shifter, SLP skip-shift eliminator. 7/1/09 Placed order for IOM/IO int/ SS/RS 6M 9/26/09 Took delivery!

10-22-2010, 01:08 AM	#3
Revo1 Don't Like it? Suggit. Drives: 2010 2SS/RS Join Date: Aug 2008 Location: Fresno, CA Posts: 14,832 View My Garage	New midpipes are what you need. I'd go hi-flow cats if you have the cash. __________________ "Tops off, tach up baby- loud and proud!" A Camaro lover from day one- 1996 3.8 V6 Camaro, to 1996 5.7 LT1 Camaro Z28, to the sold 2002 5.7 LS1 Camaro SS, and NOW, a [I]6.2 L99 VR 2SS/RS: XS Power stainless full exhaust, Airaid CAI, BMR drop springs and sways, custom tune by Cal Speed- 411rwhp

10-22-2010, 10:36 AM	#6
PAUL SS The Mark of Excellence Drives: 2010 ABM 1SS RS LS3 Join Date: Jan 2009 Location: Smallest State in the Union Posts: 8,688 View My Garage	Removing the cats is a federal offense! __________________ BMR, CAI, DynoMax, Elite Eng., Hurst, Jannetty, Clear Image Headers & Hi Flow cats, Jet Hot, LSR, TSW, VMax, Vredestein

10-22-2010, 10:56 AM	#7
Iwantone2 Voice Of The Voiceless Drives: CGM 1SS RS Join Date: Feb 2009 Location: OC Cali Posts: 9,610 View My Garage	Question related to this topic: What's the difference between getting the midpipe, rather than just swapping out the current cats for high-flow cats? __________________

10-22-2010, 07:29 AM	#4
BowlingSS Camaro Owner Since 1987 Drives: 2011 2SS/RS L99 RJT Join Date: Jun 2006 Location: Lawrenceville, GA Posts: 2,185	You really need headers IMO. Bill

10-22-2010, 10:31 AM	#5
RedRyder Drives: 2010 VR 2SS/RS M6 Camaro Join Date: Feb 2010 Location: Atlanta, GA Posts: 499 View My Garage	If you don't want headers I think high flow cats are the next best choice.

10-22-2010, 05:08 PM	#10
SGOS252382 Drives: 2010 Camaro 2SS/RS Join Date: Mar 2008 Location: S.W. Florida Posts: 6,294	ADM and some other vendors sell race pipes that take the place of the cat section. High flow cats are expensive. Its cheaper to just replace the stock cats with a race pipe (go catless) if you're looking for cheap HP. Then when you have emissions testing, etc you can just put your cats back on.

10-22-2010, 05:12 PM	#11
danhr BAMF SS Drives: 2016 Camaro 1SS A8 Join Date: Mar 2010 Location: Ford City, PA Posts: 3,024	here's a dumb question Why don't you want headers? __________________ 2016 1SS A8: FBO + Circle D + P1X + Meth + Tuned by Pray Performance Stock Longblock 800 SAE rwhp. 9.4 @ 145 mph.

10-22-2010, 06:36 PM	#12
Merc In The Circle Drives: 2010 Camaro 2SSRS IOM M6 Join Date: May 2009 Location: Abbotsford BC Canada Posts: 11,310	You need to quit kidding yourself and put on a good exhaust system and headers to go with the maggie.

10-22-2010, 06:46 PM	#13
zirotti Drives: 2013 ZL1 Join Date: Aug 2010 Location: Dallas Posts: 402	If you are going to go the work of putting on new cats and still needing a tune, might as well go the hole shootin' match

10-23-2010, 12:02 PM	#14
speed racer Speed Racer Drives: 2010 SuperCharged SS/RS Join Date: Dec 2009 Location: Edmond, Ok Posts: 185 View My Garage	I don't want headers because they are too loud... I am going to keep the stock manifolds and just remove the cats I think.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
DIY : Install headers on 2010 Camaro SS	Nine Ball	Camaro DIY & HOW-TO instructions & discussions	70	06-25-2020 07:40 PM
SLP Headers / High Flow Cats (CHECK ENG LIGHT ON) HELP	LENN2010Z28	Tuning / Diagnostics -- engine and transmission	10	01-23-2012 06:55 PM
Headers, Cats, & X-Pipe	StlRomAniaN	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	2	08-28-2010 12:42 PM
Just got ARH Long Tube Headers and Cats installed	BaylorCamaro	Camaro V6 LLT Engine, Exhaust, and Bolt-Ons	17	08-23-2010 11:49 PM