EXHAUST QUESTIONS

MartinLe · 09-07-2021, 06:10 PM

I have 2"TSP headers going catless to the stock suitcase. I run my car in sport mode with the valves open. I thought the car would be way loud at idle and breaking windows at redline. Ok, it may be loud at WOT (but in my opinion, nothing that even approaches all of the adjectives I see thrown around in this forum), AND she has no presence at idle or easily going through the gears. With the valves open, isn't she pretty much straight-piped? What am I missing, here?

If I put anything in the exhaust flow, won't it make it even quieter? I really want to make her louder and more noticeable all the time. Any help and all opinions will be greatly appreciated.

willzilla · 09-07-2021, 06:24 PM

Maybe pull the valve control fuse so it truly is full open all the time.

Sent from my SM-G998U using Tapatalk

CW3SF · 09-07-2021, 09:18 PM

Aftermarket brands are way louder than the stock suitcase.
Way louder and it’s not even close. Listen to a ZL1 with headers, no cats and an aftermarket catback and you’ll get it LOL.

Anti-Venom · 09-07-2021, 09:23 PM

Yes the fuse pull will help. Done that with my 2018 2ss and my Current Zl1 from day 1.

Camaro1973 · 09-07-2021, 09:36 PM

Quote:

Originally Posted by CW3SF

Aftermarket brands are way louder than the stock suitcase.
Way louder and it’s not even close. Listen to a ZL1 with headers, no cats and an aftermarket catback and you’ll get it LOL.

Stock suitcase sounds like a tin can with marbles too with headers and no cats.

avalonandl · 09-07-2021, 09:56 PM

Louder is not always better. The OE is a bit raspy at times but I think the sound is ok.

I don't feel ike spending 2k for a Borla system that is really just a different tone.

2018ZL1 · 09-08-2021, 06:24 AM

I love the way mine sounds with 2 inch ARH headers, no cats and the stock suitcase! To each his own I guess.. I am older so I don't like it loud until you go WOT!

PROMETHEUS · 09-08-2021, 06:29 AM

Get rid of the suitcase! With it, you don't have "straight pipes". Suggest looking at AWE track edition axleback. It gets rid of the suitcase! $900. If you want loud.....that is the one.

I would have suggested their catback system with the performance link pipes. But they don't make the PLPs anymore. In fact, if you look on their website the axleback is louder than the catback. If you want a good video on AWE's track edition, see the link. You can watch the entire video, but if you want to hear how it sounds go to 9.19 of the video and that will give you a very good representation of the exhaust. You will not be disappointed! She is giving a good comparison between the track edition catback with the PLPs and then without them. But unfortunately AWE doesn't make the PLPs anymore. They sold all of their stock to the RPM store, but they don't have anymore either. The PLPs get rid of the secondary cats. If you know of a good exhaust shop, they might be able to make them for you, if you really want them.

Joshinator99 · 09-08-2021, 06:41 AM

Quote:

Originally Posted by PROMETHEUS

Get rid of the suitcase! With it, you don't have "straight pipes". Suggest looking at AWE track edition axleback. It gets rid of the suitcase! $900. If you want loud.....that is the one.

I would have suggested their catback system with the performance link pipes. But they don't make the PLPs anymore. In fact, if you look on their website the axleback is louder than the catback. If you want a good video on AWE's track edition, see the link. You can watch the entire video, but if you want to hear how it sounds go to 9.19 of the video and that will give you a very good representation of the exhaust. You will not be disappointed!

2” headers with the AWE Touring system is loud AF too.

jvandy50 · 09-08-2021, 09:32 AM

Quote:

Originally Posted by willzilla

Maybe pull the valve control fuse so it truly is full open all the time.

Sent from my SM-G998U using Tapatalk

this, i am still floored that track mode will allow the valves to close at all.

Z OH 6 · 09-08-2021, 09:41 AM

Quote:

Originally Posted by Joshinator99

2” headers with the AWE Touring system is loud AF too.

Yep.

JSH · 09-08-2021, 10:01 AM

Has anyone weighed the stock axleback, suitcase, catback, etc.?

willzilla · 09-08-2021, 01:22 PM

Quote:

Originally Posted by JSH

Has anyone weighed the stock axleback, suitcase, catback, etc.?

I hope to pull mine in the next week or so and can weigh entire exhaust secondary cats and back.

Sent from my SM-G998U using Tapatalk

JSH · 09-08-2021, 01:43 PM

Quote:

Originally Posted by willzilla

I hope to pull mine in the next week or so and can weigh entire exhaust secondary cats and back.

Sent from my SM-G998U using Tapatalk

As do I.

09-07-2021, 06:10 PM	#1
MartinLe Drives: 2017 Chevrolet Camaro ZL1 M6 Join Date: Jul 2020 Location: OR Posts: 479	EXHAUST QUESTIONS I have 2"TSP headers going catless to the stock suitcase. I run my car in sport mode with the valves open. I thought the car would be way loud at idle and breaking windows at redline. Ok, it may be loud at WOT (but in my opinion, nothing that even approaches all of the adjectives I see thrown around in this forum), AND she has no presence at idle or easily going through the gears. With the valves open, isn't she pretty much straight-piped? What am I missing, here? If I put anything in the exhaust flow, won't it make it even quieter? I really want to make her louder and more noticeable all the time. Any help and all opinions will be greatly appreciated. __________________ JRE Terminator Rough Idle Cam Magnuson 2650 - 15% lower, 90mm upper FIC+30% DSX Flex fuel/Low side NW 103mm TB/Roto-Fab CAI Monster S Series Elite E2-X 2" TSP LT's BMR:BK063, BK060,TCA061, UTCA060, UTCA063 Weld Beadlocks/17" NT5R2

09-07-2021, 06:24 PM	#2
willzilla D3RPZILLA Drives: 2021 Camaro ZL1 a10 Join Date: Aug 2020 Location: San Antonio, TX Posts: 642 View My Garage	Maybe pull the valve control fuse so it truly is full open all the time. Sent from my SM-G998U using Tapatalk __________________ 2021 Camaro ZL1 Satin Steel w/a10/PDR/CF/Red Belts/Navigation Website: z1lla.com \| YouTube: youtube.d3rpzilla.com YouTube Playlists: Performance Mods \| Interior & Exterior Mods \| Other Mods

09-07-2021, 09:18 PM	#3
CW3SF Drives: 2019 Chevy Camaro ZL1 M6 Join Date: Jul 2019 Location: Sea level Posts: 1,252 View My Garage	Aftermarket brands are way louder than the stock suitcase. Way louder and it’s not even close. Listen to a ZL1 with headers, no cats and an aftermarket catback and you’ll get it LOL. __________________ Kong Stage X Port, NW103, LPE HPFP, XDI +30 Injectors, ARH Headers, Flex Fuel, JMS Booster, AWE Touring, Elite E2-X CC. Stock heads, stock cam, stock pulleys: Tuned by KingLT1. 740whp Uncorrected on e50

09-07-2021, 09:56 PM	#6
avalonandl Drives: 2019 ZL-1 Join Date: Feb 2009 Location: Troy, MI & Naples, FL Posts: 2,019	Louder is not always better. The OE is a bit raspy at times but I think the sound is ok. I don't feel ike spending 2k for a Borla system that is really just a different tone. __________________ 2019 ZL-1 Acquired 4/23/21 at 6300 miles. Riverside Blue, A10, PDR. Traded in 2017 2SS with 6M and 32k miles. Continental Extreme Contact Sports. Now has 10,000 miles... 2012 Yukon XL Denali w/ 6.2 AWD

09-08-2021, 06:24 AM	#7
2018ZL1 Drives: 2018 ZL1 A10 NFG Join Date: Feb 2018 Location: Woodbine Md Posts: 652 View My Garage	I love the way mine sounds with 2 inch ARH headers, no cats and the stock suitcase! To each his own I guess.. I am older so I don't like it loud until you go WOT! __________________ 2018 ZL1-NFG-A10 New Iron L8T 9.32 147MPH

09-07-2021, 09:23 PM	#4
Anti-Venom Drives: 98 Z28 SS, 2018 ZL1 HYPER BLUE Join Date: Aug 2008 Location: Florida Posts: 75	Yes the fuse pull will help. Done that with my 2018 2ss and my Current Zl1 from day 1.

09-08-2021, 10:01 AM	#12
JSH Drives: '20 ZLE Join Date: Jun 2020 Location: Mile High Posts: 3,559	Has anyone weighed the stock axleback, suitcase, catback, etc.? __________________ '20 ZL1 1LE A10, OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next.

User Name		Remember Me?
Password