Running Cats vs. Cat-less video request - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Outlaw77 · 08-20-2015, 01:15 PM

Hey All,

I am about to get a cam installed and remove the cats. Cats are not required where I live.

I want to make the car a little louder. I have read many threads on what it will sound like if the cats were removed but I would like to hear some comparisons if possible. Currently I have kooks lt headers, hi flow cats and a magnaflow street series cat back. The cat back I have has a large resonator where the stock H pipe was along with 2 mufflers out back. I'm planning on removing the cats, get re-tuned and remove the mid resonator. I hope this will give me the sound I'm looking for.

Does anyone have a video they could post showing what a lt header with no cats sound like?

Thanks!

shibbs · 08-20-2015, 02:35 PM

This is my car. 2" Texas Speed LT headers, no cats, and the stock catback.

No cats will make it.... "sharper" sounding. The cats (even high-flows) mellow out the exhaust a bit. Especially at the top of the RPM range. High-flows less than the stockers, but still.

I just picked up the Magnaflow 3" competition catback, will hopefully have videos this weekend if you're interested.

Ajdin@A2BMotorsport · 08-20-2015, 03:02 PM

Ill get a video of my car for you tonight, im running TSP 1 7/8 Headers, Catless Mids, MBRP 3" Exhaust and a custom grind cam, raspy as hell but I love it.

Outlaw77 · 08-20-2015, 03:02 PM

Thanks shibbs!

Outlaw77 · 08-20-2015, 03:03 PM

Quote:

Originally Posted by Ajdin@A2BMotorsport

Ill get a video of my car for you tonight, im running TSP 1 7/8 Headers, Catless Mids and an MBRP 3" Exhaust, raspy as hell but I love it.

I would be very interested in hearing that, thanks.

2SSCAMARO · 08-20-2015, 03:21 PM

This is close to what you have, kooks long tubes, cammed Maggie and a full 3" kooks system. It was too loud and sounded bad without the cats. This video is catless but with 10" mufflers in place of the cats and kooks mufflers at the back.

GONIF · 08-20-2015, 04:05 PM

Quote:

Originally Posted by Outlaw77

Hey All,

I am about to get a cam installed and remove the cats. Cats are not required where I live.

I want to make the car a little louder. I have read many threads on what it will sound like if the cats were removed but I would like to hear some comparisons if possible. Currently I have kooks lt headers, hi flow cats and a magnaflow street series cat back. The cat back I have has a large resonator where the stock H pipe was along with 2 mufflers out back. I'm planning on removing the cats, get re-tuned and remove the mid resonator. I hope this will give me the sound I'm looking for.

Does anyone have a video they could post showing what a lt header with no cats sound like?

Thanks!

Cats are required . It is a federal law that all vehicles that came with cats must have them .Your car to be legal requires cats , look at you emission sticker. That said you and everyone else where there no inspections can easily run cat less and get away with it. It will be louder and more raspy , and you may like that

Drumminxx · 08-20-2015, 04:10 PM

Quote:

Originally Posted by GONIF

Cats are required . It is a federal law that all vehicles that came with cats must have them .Your car to be legal requires cats , look at you emission sticker. That said you and everyone else where there no inspections can easily run cat less and get away with it. It will be louder and more raspy , and you may like that

Looks like the OP is in Canada.

GONIF · 08-20-2015, 04:14 PM

Quote:

Originally Posted by Drumminxx

Looks like the OP is in Canada.

Don't know the Fed emissions laws in Canada , but I suspect they require cats on newer cars.

shibbs · 08-20-2015, 04:16 PM

Quote:

Originally Posted by GONIF

Don't know the Fed emissions laws in Canada , but I suspect they require cats on newer cars.

"Require" is such a strong word.

Outlaw77 · 08-20-2015, 04:35 PM

Quote:

Originally Posted by GONIF

Cats are required . It is a federal law that all vehicles that came with cats must have them .Your car to be legal requires cats , look at you emission sticker. That said you and everyone else where there no inspections can easily run cat less and get away with it. It will be louder and more raspy , and you may like that

Thanks but it's a little different in Canada. In Alberta emission inspections are not required. BC just dropped them after 20 years. Quebec and Ontario still do though.

Outlaw77 · 08-20-2015, 04:39 PM

New cars are sold here with cats on them. Used cars have to have cats on them to be sold. But in most provinces you can drive right to the muffler shop and take them off and no one will bother you. Now you might get a check engine light but a tune takes care of that.

bionick · 08-20-2015, 09:40 PM

Im Catless. Mods in description.

After cam install.
Just an idle and a rev
http://youtu.be/_r95jLwvXFs

Before cam install. Actual driving with my phone on the back of my car
http://youtu.be/p1Why11Rs80

Before cam revs

http://youtu.be/hUBzOls_18E

camarosspower · 08-20-2015, 10:16 PM

https://youtu.be/-d7CGpmmHdk

This is mine. Intake kooks Lt headers with HF cats nf cam.

08-20-2015, 01:15 PM	#1
Outlaw77 Drives: 2018 Charger SRT 392 F8 Green Join Date: Aug 2010 Location: Oakville Ontario, Canada Posts: 1,910	Running Cats vs. Cat-less video request Hey All, I am about to get a cam installed and remove the cats. Cats are not required where I live. I want to make the car a little louder. I have read many threads on what it will sound like if the cats were removed but I would like to hear some comparisons if possible. Currently I have kooks lt headers, hi flow cats and a magnaflow street series cat back. The cat back I have has a large resonator where the stock H pipe was along with 2 mufflers out back. I'm planning on removing the cats, get re-tuned and remove the mid resonator. I hope this will give me the sound I'm looking for. Does anyone have a video they could post showing what a lt header with no cats sound like? Thanks!

08-20-2015, 03:21 PM	#6
2SSCAMARO Drives: 2010 Camaro Auto Join Date: Mar 2010 Location: Fl Posts: 1,164	This is close to what you have, kooks long tubes, cammed Maggie and a full 3" kooks system. It was too loud and sounded bad without the cats. This video is catless but with 10" mufflers in place of the cats and kooks mufflers at the back. __________________ Just livin' life

08-20-2015, 09:40 PM	#13
bionick Drives: 2010 2SS/RS M6 Join Date: Oct 2013 Location: Gilbert, AZ Posts: 931 View My Garage	Im Catless. Mods in description. After cam install. Just an idle and a rev http://youtu.be/_r95jLwvXFs Before cam install. Actual driving with my phone on the back of my car http://youtu.be/p1Why11Rs80 Before cam revs http://youtu.be/hUBzOls_18E __________________ 2010 Camaro 2SS/RS \| 416 LS3 \| FED stage 2 heads Last edited by bionick; 08-21-2015 at 12:42 PM.

08-20-2015, 03:02 PM	#3
Ajdin@A2BMotorsport Account Suspended Drives: 2013 Camaro 1SS/1LE Join Date: Feb 2013 Location: Waterloo Posts: 609	Ill get a video of my car for you tonight, im running TSP 1 7/8 Headers, Catless Mids, MBRP 3" Exhaust and a custom grind cam, raspy as hell but I love it.

08-20-2015, 04:39 PM	#12
Outlaw77 Drives: 2018 Charger SRT 392 F8 Green Join Date: Aug 2010 Location: Oakville Ontario, Canada Posts: 1,910	New cars are sold here with cats on them. Used cars have to have cats on them to be sold. But in most provinces you can drive right to the muffler shop and take them off and no one will bother you. Now you might get a check engine light but a tune takes care of that.

08-20-2015, 10:16 PM	#14
camarosspower Drives: 2010 camaro ss Join Date: Jun 2010 Location: Port Arthur, Tx Posts: 2,383	https://youtu.be/-d7CGpmmHdk This is mine. Intake kooks Lt headers with HF cats nf cam.