cutout not loud enough

Reply Subscribe

Thread Tools

Search this Thread

Jan 3, 2009 | 04:42 PM

Jason72g

Thread Starter

On The Tree

iTrader: (1)

Joined: Dec 2005

Posts: 129

Likes: 0

From: Abilene, TX

cutout not loud enough

I am tossing around the idea of just gutting the cats, I haven't yet in fear of regret... Stock manifolds, cats with a cutout.... Can't run ORY because Texas I believe does visual inspections for cats... What's the solution here? Will headers with a catted Y do the trick? Do headers Really make that big of a diff??

Jan 3, 2009 | 05:32 PM

scidav87

9 Second Club

iTrader: (16)

Joined: Apr 2008

Posts: 372

Likes: 1

From: Kansas City, MO

I have the LM-1 exhaust and with the stock manifolds and cats, had a nice tone to it, when i put LT's on and an ORY it was HELLA LOUD, i ended up getting a new catback. LT's will make it louder! Even if they don't, its one of the first things to do on an LS1 anyway, thats like 25HP right there....with a good Y setup. You could gut the cats as well. To get rid of the crappy factory Y and if you don't have the money for a good Catted one, you could buy and ORY and the weld in Fake cats (like your gutted stockers)

Jan 3, 2009 | 05:39 PM

jrob56

TECH Addict

iTrader: (39)

Joined: Jul 2006

Posts: 2,153

Likes: 0

From: Indianapolis, IN

just get headers and yes they make that big of a difference, i love my car way more with headers wish i could have gotten them on there sooner...

Jan 3, 2009 | 07:09 PM

Z28/2002

11 Second Club

iTrader: (27)

Joined: May 2005

Posts: 6,799

Likes: 5

From: Your girl's back door giving her the long stroke while you're at work

Solution is getting rid of the stock manifolds and cats

Jan 4, 2009 | 01:48 AM

Z28M6TT

On The Tree

Joined: Sep 2008

Posts: 167

Likes: 0

stock manifolds w/o any kind of cat-back sound like a truck. plus LS1s dont get loud until you get longtubes. then they friggen scream

Jan 4, 2009 | 03:57 AM

GMCtrk

TECH Senior Member

iTrader: (23)

Joined: Jul 2004

Posts: 9,853

Likes: 0

From: Houston, TX

my experience....this is on a truck btw....longtubes into catted Y pipe into a cutout it's no louder than stock manifolds stock catted y into the same cutout. Running longtubes into ORY into cutout was significantly louder. The biggest difference in volume comes from cats/no cats, not manifolds vs longtubes. Just my experience. I ran no cats for 6 months or so, got sick of the fumes seeping into the cab on my DD. No sotp difference with cats, I miss the "muscle car" sound though.

Jan 4, 2009 | 12:20 PM

redbadss

TECH Enthusiast

iTrader: (4)

Joined: Jul 2008

Posts: 540

Likes: 0

From: Oklahoma

Quote:

Originally Posted by Z28M6TT

stock manifolds w/o any kind of cat-back sound like a truck.

i disagree, i think a lot of fbodys sounds good with just a catback w/ stock manifolds.. they don't sound as loud or mean as cars with headers, but come on now they don't sound like a truck..

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Verdad Gallardo

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Verdad Gallardo

Jan 4, 2009 | 01:50 PM

ncfastls1

TECH Apprentice

iTrader: (1)

Joined: Dec 2008

Posts: 385

Likes: 0

From: Fuquay Varina, NC

Quote:

Originally Posted by Jason72g

Headers and a catted y pipe will definitely do the trick. I had just an intake and exhaust for a while but when I got my kooks long tubes and high flow catted y-pipe installed it made a HUGE difference. Was extremely loud and much faster. I dunno what kind of exhaust you have but I have a Borla with the wide open plate and I really can't imagine it being much louder haha.

Jan 4, 2009 | 04:08 PM

#10

adam1803

TECH Fanatic

iTrader: (65)

Joined: Jun 2006

Posts: 1,188

Likes: 0

From: OKC

Quote:

Originally Posted by GMCtrk

The biggest difference in volume comes from cats/no cats, not manifolds vs longtubes.

I agree 100%, if they do visual inspections just gut your stock cats and it will be much louder.

Jan 4, 2009 | 04:59 PM

#11

redbadss

TECH Enthusiast

iTrader: (4)

Joined: Jul 2008

Posts: 540

Likes: 0

From: Oklahoma

Quote:

Originally Posted by Jason72g

He said WITHOUT a catback... Meaning, it takes a catback to make them sound good with manifolds... not a cutout.

haha my mistake

sorry bout that

Jan 4, 2009 | 05:07 PM

#12

HMERacing

TECH Regular

Joined: May 2008

Posts: 458

Likes: 0

From: Marissa, Il

Pickup some 00-02 stock manifolds, cats and ypipe. Use a offroad pipe in place of the cats. when its time for inspection just swap the cats back in.

Jan 4, 2009 | 07:11 PM

#13

GG01SS

On The Tree

iTrader: (1)

Joined: Feb 2007

Posts: 199

Likes: 0

From: SE Florida

Until I decide on a cam, I'm keeping my stock manifolds w/ ORY, when cut-out is opened car screams at high RPM's. But very raspy at low RPM's.

Jan 4, 2009 | 09:44 PM

#14

LS1nut377

12 Second Club

iTrader: (16)

Joined: Mar 2008

Posts: 444

Likes: 0

From: Amarillo, Texas

hey im from texas. and i have LT's ORY slp LM. LOUD! and if i were you i would find a buddy or get to know somone to give you an inspection.mabe slip them a 20 and a sticker happens to appear on the windshield