03-07-2024, 09:08 AM | #1 |
Drives: 2023 Camaro SS Join Date: Jan 2024
Location: Spring, TX
Posts: 18
|
Eliminate rasp
Recently installed 2 inch headers on my Camaro ss. I noticed if you aren’t flooring it 24/7, the car sounds really raspy and has no deep tone. Almost like a straight piped v6. My current setup is catless with a muffler delete and stock x pipe. What can be done to make the car deeper in tone or at least make it sound good? I have the stock npp muffler. Was considering on putting it back on to see if it would change the sound, what do you guys think?
|
03-07-2024, 09:32 AM | #2 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,800
|
Put the muffler back on it.
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
03-07-2024, 09:43 AM | #3 |
Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020
Location: MO
Posts: 1,992
|
The usual answer for a car with headers is to put the suitcase back in, go back stock muffler, etc, not sure if you have/had NPP.
|
03-07-2024, 11:26 AM | #4 |
Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017
Location: East Tennessee
Posts: 11,618
|
With those big headers, even the stock muffler won't be enough to fully eliminate the rasp, add resonators to the midsection as well.
__________________
2018 Camaro 2SS — G7E MX0 NPP F55 IO6
735 rwhp | 665 rwtq Magnuson TVS 2300 80mm pulley | Kooks 1 7/8" LT headers | JRE smooth idle terminator cam | LT4 FS & injectors | TSP forged pistons & rods JMS PowerMAX | DSX flex fuel kit | Roto-Fab CAI | Soler 95mm LT5 TB | 1LE wheels | 1LE brakes | BMR rear cradle lockout | JRE custom tune 1100 - 1/30/18 | 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 | 3800 - 2/26/18 4300 - 2/27/18 | 4B00 - 3/01/18 4200 - 3/05/18 | 4800 - 3/14/18 5000 - 3/16/18 | 6000 - 3/19/18 |
03-07-2024, 11:40 AM | #5 |
Drives: 2023 Camaro SS Join Date: Jan 2024
Location: Spring, TX
Posts: 18
|
|
03-07-2024, 01:57 PM | #6 |
Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017
Location: East Tennessee
Posts: 11,618
|
https://www.magnaflow.com/products/1...-muffler-12469
...but I haven't gotten round to installing it yet Others here did and reported ample rasp reduction, and I'll report back once mine is on the car, too. The stock suitcase muffler does take some of the edge off, but at WOT you'll still hear a lot of it.
__________________
2018 Camaro 2SS — G7E MX0 NPP F55 IO6
735 rwhp | 665 rwtq Magnuson TVS 2300 80mm pulley | Kooks 1 7/8" LT headers | JRE smooth idle terminator cam | LT4 FS & injectors | TSP forged pistons & rods JMS PowerMAX | DSX flex fuel kit | Roto-Fab CAI | Soler 95mm LT5 TB | 1LE wheels | 1LE brakes | BMR rear cradle lockout | JRE custom tune 1100 - 1/30/18 | 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 | 3800 - 2/26/18 4300 - 2/27/18 | 4B00 - 3/01/18 4200 - 3/05/18 | 4800 - 3/14/18 5000 - 3/16/18 | 6000 - 3/19/18 |
03-07-2024, 02:19 PM | #7 |
Drives: 2023 2SS 1LE Join Date: Dec 2022
Location: Anaheim, CA
Posts: 15
|
Any combination of cats/mufflers/resonators will help. I personally have added Vibrant Performance (bottle style) resonators on my setup with catless ARH and Corsa NPP. They were a tight fit, but the local shop welded them on a custom xpipe they did to connect between the ARH and Axleback.
|
03-09-2024, 11:37 PM | #8 | |
Account Suspended
Drives: Camaro SS Join Date: Aug 2023
Location: Middle Park East, Liberty City
Posts: 238
|
Quote:
An aged original muffler. |
|
03-11-2024, 01:27 PM | #9 |
Drives: '86 IROC-Z '18 ZL1 Join Date: Jul 2019
Location: Arizona
Posts: 734
|
Wait... so basically it's just a straight pipe? Well that's why it sounds like dog shit and is the equivalent to the fart cans imports have. *and sound just as bad*
Leave that shit to the Dodge boys and get a decent sounding muffler. OEM is actually pretty decent with headers/no cats. Borla is solid as well. |
03-11-2024, 02:03 PM | #10 |
Drives: 2015 Camaro ZL1 Join Date: Oct 2020
Location: Clinton Twp, Michigan
Posts: 249
|
The best answer in my opinion is to put cats back on it.
|
03-11-2024, 03:12 PM | #11 |
Drives: 2020 Chevy Camaro ZL1 Join Date: Apr 2023
Location: Calgary Canada
Posts: 1,483
|
|
03-11-2024, 03:15 PM | #12 |
Drives: 2020 Camaro 2SS A10 Join Date: Jun 2018
Location: Michigan
Posts: 1,382
|
I'll say it then.
2" LT headers, no cats, 3" X-pipe (stock is 2.75), stock axle-back Added MBRP axle-back + Cam No you won't chop like I do, but MBRP will lower the tone. All the rasp is mostly in the Axle-back maybe a small part of it in the x-pipe. With my setup its basically straight piped. And it is loud compared to stock suit case. Sound at near WOT again remember I have a cam. Also remember soon as you dump the stock suit case you are likely to get some drone. My car does have drone, more of a buzzing sound at cruising speeds. Some people hate it, it doesn't bother me anymore, it did at first until I got used to it. That said I attribute the buzzing sound to the cam, and trans tune that I have. The axle-back makes it more obvious than it would with the stock suit case still on.
__________________
2020 Camaro 2SS A10 | Rebuilt by: CBI Street Cars | 2" SE LT Headers | 3" SE X-Pipe | 3" MBRP Axle-Back | Pri & Sec Cat Deletes | K&N Typhoon CAI | LT2 Ported | 95mm ZR1 TB | DOD Delete | BTR Stage I Cam | ECM, TCM & E85 |Tuned by: Shane Hinds | Dyno: 510 rwhp 472 rwtq
Last edited by FlukeSS; 03-11-2024 at 03:26 PM. |
03-11-2024, 04:39 PM | #13 |
Drives: 2020 Chevy Camaro ZL1 Join Date: Apr 2023
Location: Calgary Canada
Posts: 1,483
|
It’s like putting grease on an eraser just so it doesn’t squeak anymore.
|
03-11-2024, 07:29 PM | #14 |
Drives: 2017 1SS 6spd Join Date: Jan 2011
Location: Utah
Posts: 2,869
|
The Magnaflow is a good piece for the right price and Borla offers this at a much higher price for those who overshot the mark with their exhaust sound.
https://www.rpidesigns.com/shop/item...sonator-60608/ But you may find the stock NPP can is needed as well. Everyone is different in their idea of the best sound. |
|
|
Post Reply
|
|
|