Homepage Garage Wiki Register Members List Social Groups Calendar Search Today's Posts Mark Forums Read
Go Back   CAMARO6 > Engine | Drivetrain | Powertrain Technical Discussions > V8 LT1 Engine, Exhaust, and Bolt-Ons


Post Reply
Thread Tools
Old 09-03-2020, 01:25 PM   #1
Drives: Chevy camaro
Join Date: Aug 2020
Location: Lakeside, Az
Posts: 257
Headers & hi flow cats into stock exhaust or straight pipes?

This is for a buddy it's a 5th gen 6.2 SS 1LE but I'm thinking folks here could give some input as well.

He's got some kooks 1 7/8 with hi-flow cats and he bought a 3" straight through setup with an x pipe as well. I'm guessing it's gonna be way louder then he wants so the question, tie it into stock exhaust or use the straight setup and possibly put some vibrant resonators on it, and what would he be giving up in hp to just use the stock exhaust after headers?
dbs1 is offline   Reply With Quote
Old 09-04-2020, 12:47 PM   #2

Drives: '16 Garnet Red 1SS
Join Date: Mar 2014
Location: College Station, TX
Posts: 3,210
Try stock first. Then go from there.
'16 Camaro 1SS
'18 Miata GT
Gone: '01 Camaro, '14 Camaro, '90 Miata
enzia35 is online now   Reply With Quote
Old 09-06-2020, 10:34 AM   #3
Drives: 2018 camaro 2ss
Join Date: Nov 2018
Location: Riverside CA
Posts: 65
I went from muffler delete to ARH 2 inch long tube catless headers with the stock exhaust back on it. Not sure how much HP it would have been without the muffler but I gained about 25 WHP before and after.

Noise level came out perfect in my opinion. A little louder than stock with anything under 2.5k RPM but gets loud af when you go WOT
Redline_2ss is offline   Reply With Quote
Old 09-06-2020, 02:30 PM   #4

avalonandl's Avatar
Drives: 2017 Camaro 2SS
Join Date: Feb 2009
Location: Troy, MI & Naples, FL
Posts: 1,646
You don't want straight pipes....not with headers...
Garnet 2017-2SS w/ 6spd manual, MRC,NPP,Nav, Kalahari interior. Delivered 3/22/17. Privat Profil 19's Firehawk 275/40/19 Square set up. Tony Mamo TB V2.

2012 Yukon XL Denali w/ 6.2 AWD
avalonandl is offline   Reply With Quote
Old 09-09-2020, 06:41 PM   #5
Drives: 2017 SS 1LE
Join Date: May 2018
Location: Tracy CA
Posts: 32
Like redline said,

I used American Racing Headers, no cats, xpipe back to original muffler.
Engine can finally breathe. Sounds great & yes full throttle is loud AF. Your neighbors will love it.
mcatron is offline   Reply With Quote
Old 09-15-2020, 11:46 AM   #6
Spartan268's Avatar
Drives: HB 2SS
Join Date: Apr 2017
Location: Vancouver, BC
Posts: 518
Not sure if the 5th gen is any difference but headers to straight pipe sounds like ass. To the stock exhaust it's a lot better but sometimes have a tin can sound. Granted this is moreso for the 6th gen.

I'd suggest what Enzia said and start with the stock muffler before chopping anything off.
Spartan268 is offline   Reply With Quote
Old 09-30-2020, 07:20 AM   #7
Drives: 2021 camaro 2LT
Join Date: Aug 2020
Location: Suffolk county, NY
Posts: 7
I have a 2021 2.0 coming in and I can’t find straight pipes for them or axel back I guess is the same thing. But any help or link would be great every site doesn’t seem to fit my new camaro
Ezpzrider is offline   Reply With Quote
Old 09-30-2020, 01:11 PM   #8
Blackmonba6Gen's Avatar
Drives: 16 Camaro 2SS A8
Join Date: May 2017
Location: Michigan
Posts: 288
I believe I have made a bad decision..I bought Kooks catless headers which will hook up to my secondary cat deleted H pipe system with no mufflers.I never had a system like this before. I believe the only option I have left is I keep my stock suitcase muffler or buy AWE conversion kit or buy catted connections. Not sure if any of those will make a difference.

FBO w/ Ported LT2 Intake Manifold/ Flex Fuel
Kooks Headers/Tony Mamo Ported 87MM TB
RotoFab Dry CAI
Mishimoto Catch Can
Velossa Air Scoop
Mustang Dyno w/ WCF 480RWHP /490TQ E70

Instagram Here
YouTube Here


Last edited by Blackmonba6Gen; 09-30-2020 at 01:31 PM.
Blackmonba6Gen is offline   Reply With Quote
Old 10-03-2020, 08:34 PM   #9
Drives: 17 Camaro SS
Join Date: Nov 2019
Location: Central VA
Posts: 64
Headers make it louder. I installed the Flow Tech glass pack mufflers first and it sounded great but the headers made it louder but more torque. I like it as it is. The stock muffler sounds way to tinny.
Flow Tech axle back, Roto-Fab, Soler 95mm ported TB, AEM Wide Band, Defrost vent pod, billet catch can, BBK long tube headers and NGK LTR6GP, #90198. One step colder.
DannyC is offline   Reply With Quote
Post Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 11:42 PM.

Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.