Muffler delete worth?

Richroadrage · 07-30-2019, 02:20 PM

Hey guys I'm kinda new to these forums so I apologize if this topic has been beat to death.

I feel like the sound on my stock ss can be lackluster at times. As we all know, exhaust mods are extremely pricey so buying even headers is gonna hurt my pockets (I'm a college student so my school needs and rent come first). I want to do a muffler delete but I'm not sure removing the NPP exhaust is worth it at all. My 5.0 buddy tells me I should leave the muffler on as the NPP is highly desired and expensive. Just want some input from those who have deleted their mufflers or have alternate exhaust setups. Also does a fuse pull make a noticeable difference in sound?

Blackmonba6Gen · 07-30-2019, 02:29 PM

I've did the fuse pull and it was OK nothing really for me to brag about it just kept the valves open. It's worth a shot to try it out. If you dont like it you know what to do. I went straight piped with the AWE Track Exhaust system.. I was like WOW and realized what I was missing. You can always keep the NPP exhuast and go back anytime if you want to trade it in. One thing I have learned though with the new system is how much foot I put in the gas..Less foot = Less Noise..More Foot = MASSIVE NOISE

samjlee27 · 07-30-2019, 03:02 PM

I deleted my mufflers and my secondary cats. It drones a lot on the highway on 6th gear, but otherwise I love the sound. But if I could do it again, I would just keep the NPP and delete the secondary cats.

Laststandard · 07-30-2019, 03:36 PM

I picked up the Hooker Race cat-back setup when Holley was selling it on mega-clearance for $270. I picked it up as it was a cheap way to get the secondary cat delete and x-pipe.

I decided to throw the whole system on just for fun.. it is LOUD. Drones in 6th pretty bad. It sounds good, but I'm surprised I haven't been pulled over for it yet.

Before that I had the Borla secondary cat delete with the stock NPP setup. Getting rid of the secondary cats adds a nice bit of sound without going to overboard, but if you live someplace where they do emission inspections you may be out of luck.

The only thing the NPP fuse pull does is stop the valve from closing at light throttle cruising, mainly 5th and 6th gear. With the exhaust in track mode the valves stay open most of the time anyways.

Cannon Green · 07-30-2019, 03:55 PM

Yoooo! I have a 2018 1SS A8 with NPP and I removed the secondary cats and had them replaced with straight pipe, sounds so good. Zero drone, no check engine light, and a lot of crackles/pops. TRUST. Should only be about $100 at any muffler shop.

Spartan268 · 07-30-2019, 04:16 PM

One thing to note is whether you heard your car from outside. Within the cabin the NPP does a good job at making the sounds go outwards from the rear. Performing a muffler delete you might get more cabin noise which gives the illusion that it's louder. At most it was a tad bit more louder with more drone and cabin noise.

You'll get more out of cutting out the secondary cats and doing headers. In the future if you do more mods you'll potentially be putting the NPP back in there.

Source: I did a muffler delete

TRZ06 · 07-30-2019, 04:22 PM

Quote:

Originally Posted by Spartan268

One thing to note is whether you heard your car from outside. Within the cabin the NPP does a good job at making the sounds go outwards from the rear. Performing a muffler delete you might get more cabin noise which gives the illusion that it's louder. At most it was a tad bit more louder with more drone and cabin noise.

You'll get more out of cutting out the secondary cats and doing headers. In the future if you do more mods you'll potentially be putting the NPP back in there.

Source: I did a muffler delete

I thought of doing headers and getting rid of the secondary's, but I wanted the look too. So I went with Corsa Extreme with 2nd cat delete. I would love to add headers for the performance, but not with the Corsa system (it is loud enough already), but I don't want to lose the awesome look of those black chrome tips that are bigger than the stock tips.

SJFGTO · 07-30-2019, 04:39 PM

If you mean by “muffler delete” simply replacing the muffler with straight pipe, please do not do that. It sounds like complete ass. Your Camaro deserves better. Delete the second cats, keep the NPP. But do not go pure muffler delete. For every tone deaf person who says they like the sound of a Camaro impersonating a dump truck, 100 will be laughing.

Cannon Green · 07-30-2019, 04:39 PM

Quote:

Originally Posted by SJFGTO

If you mean by “muffler delete” simply replacing the muffler with straight pipe, please do not do that. It sounds like complete ass. Your Camaro deserves better. Delete the second cats, keep the NPP. But do not go pure muffler delete. For every tone deaf person who says they like the sound of a Camaro impersonating a dump truck, 100 will be laughing.

pyroguy · 07-30-2019, 07:54 PM

Your buddy with the 5.0 is wise. Don't delete a NPP kit unless you can put something in comparable. As others suggested, try pulling the fuse for the valves so they stay open all the time. You have your priorities in the right place paying for school and rent first, but don't cut corners for the "right now" mod when patience will pay off in the end and you can get some long tube headers. School is only a few years, a few more for some than others, but it is a small part of life then you can enjoy your car the way you really want to enjoy it.

Harmanhd · 07-30-2019, 10:32 PM

Thank you guys for this information. I was about to get my mufflers straight piped and was giving up the npp but sounds like the best thing to do is get rid of second cats instead. Will be getting them cut off tomorrow. Also kind of a side not... I took the fuse out for the npp mode and yes it keeps the valves open at all times but if you go to system management and put the exhaust in stealth mode the valves close still even tho I pulled the fuse. I have a 2018 2ss btw

LT4Greg · 07-30-2019, 11:22 PM

Put the exhaust on track mode and it will be louder with the fuse pull! Yes by all means don’t get rid of the NPP exhaust! Many people on the forum would like to upgrade their dual system to NPP but can’t get it to function like a factory system. My advice is to concentrate on your college education now and not on modding and spending money on your Camaro! Get your degree and start making money for the things you need and extra things you want to have in life. Good luck!!

TheRealJA105 · 07-31-2019, 09:26 AM

https://www.camaro6.com/forums/showthread.php?t=558532

It's well worth it, significantly louder than the NPP with fuse pulled and the people who say it sounds bad are just mad they paid $1500 for a catback.

Laststandard · 07-31-2019, 12:24 PM

Quote:

Originally Posted by Harmanhd

Also kind of a side not... I took the fuse out for the npp mode and yes it keeps the valves open at all times but if you go to system management and put the exhaust in stealth mode the valves close still even tho I pulled the fuse. I have a 2018 2ss btw

You pulled the wrong fuse then. With the correct fuse pulled the valves will not get power and will not be able to close, no matter what.

07-30-2019, 02:20 PM	#1
Richroadrage Drives: 2017 Camaro 2SS Join Date: May 2018 Location: Atlanta, GA Posts: 5	Muffler delete worth? Hey guys I'm kinda new to these forums so I apologize if this topic has been beat to death. I feel like the sound on my stock ss can be lackluster at times. As we all know, exhaust mods are extremely pricey so buying even headers is gonna hurt my pockets (I'm a college student so my school needs and rent come first). I want to do a muffler delete but I'm not sure removing the NPP exhaust is worth it at all. My 5.0 buddy tells me I should leave the muffler on as the NPP is highly desired and expensive. Just want some input from those who have deleted their mufflers or have alternate exhaust setups. Also does a fuse pull make a noticeable difference in sound?

07-30-2019, 02:29 PM	#2
Blackmonba6Gen BLUPRINT_1LE Drives: 2022 Rapid Blue SS 1LE Join Date: May 2017 Location: Motor City -> AZ Posts: 795	I've did the fuse pull and it was OK nothing really for me to brag about it just kept the valves open. It's worth a shot to try it out. If you dont like it you know what to do. I went straight piped with the AWE Track Exhaust system.. I was like WOW and realized what I was missing. You can always keep the NPP exhuast and go back anytime if you want to trade it in. One thing I have learned though with the new system is how much foot I put in the gas..Less foot = Less Noise..More Foot = MASSIVE NOISE __________________ 2022 Camaro SS 1LE \| PDR \| Rapid Blue \| Manual \| Katech Built SS 1LE \| Katech Build Sheet IG: BLUPRINT_1LE YT: BLUPRINT_1LE ----------------------------------------------------------------

07-30-2019, 03:36 PM	#4
Laststandard Drives: 2018 1SS 1LE Join Date: Apr 2018 Location: Mpls, MN Posts: 428	I picked up the Hooker Race cat-back setup when Holley was selling it on mega-clearance for $270. I picked it up as it was a cheap way to get the secondary cat delete and x-pipe. I decided to throw the whole system on just for fun.. it is LOUD. Drones in 6th pretty bad. It sounds good, but I'm surprised I haven't been pulled over for it yet. Before that I had the Borla secondary cat delete with the stock NPP setup. Getting rid of the secondary cats adds a nice bit of sound without going to overboard, but if you live someplace where they do emission inspections you may be out of luck. The only thing the NPP fuse pull does is stop the valve from closing at light throttle cruising, mainly 5th and 6th gear. With the exhaust in track mode the valves stay open most of the time anyways. __________________ 2018 1SS 1LE (sold)

07-30-2019, 04:39 PM	#8
SJFGTO Oh Oh it's Friday Night! Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018 Location: Walton Woods Posts: 1,075	If you mean by “muffler delete” simply replacing the muffler with straight pipe, please do not do that. It sounds like complete ass. Your Camaro deserves better. Delete the second cats, keep the NPP. But do not go pure muffler delete. For every tone deaf person who says they like the sound of a Camaro impersonating a dump truck, 100 will be laughing. __________________ 2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm Four that wanna own me Two that wanna stone me One says she's a friend of mine...

07-30-2019, 07:54 PM	#10
pyroguy Keeper of “THE list” Drives: ABM #832 Join Date: Apr 2013 Location: GA Posts: 7,135 View My Garage	Your buddy with the 5.0 is wise. Don't delete a NPP kit unless you can put something in comparable. As others suggested, try pulling the fuse for the valves so they stay open all the time. You have your priorities in the right place paying for school and rent first, but don't cut corners for the "right now" mod when patience will pay off in the end and you can get some long tube headers. School is only a few years, a few more for some than others, but it is a small part of life then you can enjoy your car the way you really want to enjoy it. __________________ '10 Camaro 2SS/RS \| Aqua Blue #832 of 3,903 \| Silver Stripes Check out my build thread

07-30-2019, 03:02 PM	#3
samjlee27 Drives: Summit White 2018 Camaro 1SS M6 Join Date: Jul 2018 Location: Fairfax, VA Posts: 65	I deleted my mufflers and my secondary cats. It drones a lot on the highway on 6th gear, but otherwise I love the sound. But if I could do it again, I would just keep the NPP and delete the secondary cats.

07-30-2019, 03:55 PM	#5
Cannon Green Drives: 2018 Camaro 1SS Join Date: May 2019 Location: Southern Oregon Posts: 77	Yoooo! I have a 2018 1SS A8 with NPP and I removed the secondary cats and had them replaced with straight pipe, sounds so good. Zero drone, no check engine light, and a lot of crackles/pops. TRUST. Should only be about $100 at any muffler shop.

07-30-2019, 04:16 PM	#6
Spartan268 Drives: HB 2SS Join Date: Apr 2017 Location: Vancouver, BC Posts: 518	One thing to note is whether you heard your car from outside. Within the cabin the NPP does a good job at making the sounds go outwards from the rear. Performing a muffler delete you might get more cabin noise which gives the illusion that it's louder. At most it was a tad bit more louder with more drone and cabin noise. You'll get more out of cutting out the secondary cats and doing headers. In the future if you do more mods you'll potentially be putting the NPP back in there. Source: I did a muffler delete

07-30-2019, 10:32 PM	#11
Harmanhd Drives: 2018 camaro 2ss red line Join Date: Jul 2019 Location: Modesto Posts: 2	Thank you guys for this information. I was about to get my mufflers straight piped and was giving up the npp but sounds like the best thing to do is get rid of second cats instead. Will be getting them cut off tomorrow. Also kind of a side not... I took the fuse out for the npp mode and yes it keeps the valves open at all times but if you go to system management and put the exhaust in stealth mode the valves close still even tho I pulled the fuse. I have a 2018 2ss btw

07-30-2019, 11:22 PM	#12
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,875	Put the exhaust on track mode and it will be louder with the fuse pull! Yes by all means don’t get rid of the NPP exhaust! Many people on the forum would like to upgrade their dual system to NPP but can’t get it to function like a factory system. My advice is to concentrate on your college education now and not on modding and spending money on your Camaro! Get your degree and start making money for the things you need and extra things you want to have in life. Good luck!! __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

07-31-2019, 09:26 AM	#13
TheRealJA105 Drives: 2013 C6Z06 Join Date: Nov 2016 Location: PA Posts: 1,577	https://www.camaro6.com/forums/showthread.php?t=558532 It's well worth it, significantly louder than the NPP with fuse pulled and the people who say it sounds bad are just mad they paid $1500 for a catback.

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