Stock exhaust-why so quiet?

Drew303 · 05-21-2018, 07:52 PM

So I had a c7 Z06 before my ZL1, and you could always hear the exhaust no matter what. Full throttle, cruising, etc. In my Zl1 its super super quiet unless you are on the gas even in track mode. Is this just the stock exhaust being different? If I swap it out will I get the growl im looking for?

Gunkk · 05-21-2018, 08:33 PM

Pull fuse 51 before spending one dime.

CT ZL1 · 05-21-2018, 08:37 PM

Quote:

Originally Posted by Gunkk

Pull fuse 51 before spending one dime.

Still too quiet for my taste even with fuse pulled

Drew303 · 05-21-2018, 09:28 PM

what does fuse 51 do?

R3ctivision · 05-21-2018, 09:41 PM

Does ZL1 come stock with NPP? If so, and you are in track mode, I'm surprised you find it quiet. SS 1LE in track mode hits about 97 dB.

devnull · 05-21-2018, 09:44 PM

Quote:

Originally Posted by R3ctivision

Does ZL1 come stock with NPP? If so, and you are in track mode, I'm surprised you find it quiet. SS 1LE in track mode hits about 97 dB.

It does come standard with NPP. Mine sounds every bit as loud as my SS 1LE did, but oddly my friend's SS convertible does not seem as loud (and it is NPP).

A nice Borla xpipe would wake these suckers up!

Can'tHave2MuchHP · 05-21-2018, 10:46 PM

Corsa Xtreme for me. I have a C7 Z06 too and there definitely louder. But both cars rock Corsa Xtreme systems.

ninetres · 05-21-2018, 11:46 PM

Pulling the fuse made absolutely no difference on my ZL1 from track mode. Cruise, part throttle, WOT.....all identical with our without fuse pulled.

Gonasurvive · 05-21-2018, 11:53 PM

I wonder how much sound the back seat and cabin damper the sound. I have been tempted to drop the back seat to find out. I only really hear the car with the windows and sunroof open.

mdmoore23 · 05-22-2018, 01:16 AM

Pulling fuse 51 will not satisfy someone who truly wants a louder exhaust. I installed a Kooks axleback and omg does it wake the car up. The dual mode function is lost but I never used it anyway. Here's a cold start video. I'm gonna get around to making a proper exhaust vid one of these days. It's the best sounding axleback I've heard on these cars.

https://youtu.be/LM8Rkb9na8k

collinms · 05-22-2018, 07:17 AM

Quote:

Originally Posted by ninetres

Pulling the fuse made absolutely no difference on my ZL1 from track mode. Cruise, part throttle, WOT.....all identical with our without fuse pulled.

I have to agree with this statement. Did nothing.

BlaqWhole · 05-22-2018, 07:59 AM

Fuse pull was a thing on the 5th Gens. But it doesn't do anything significant if anything at all on the 6th Gens. Your best bet would be an aftermarket axle-back or cat-back. A cat-back will sound much better, much louder, and you'll get rid of that crushed pipe section. That's the way I would go if I were you.

DangerZL1 · 05-22-2018, 08:45 AM

The C7 has an open hatch area behind the seats. The Camaro's trunk and rear seats isolate the passenger compartment from the exhaust compared to the Corvette.

BMWM.D. · 05-22-2018, 09:27 AM

This has been mentioned a million times, but pulling the fuse really only gives you a little more sound at steady cruise and light throttle positions vs track mode. Definitely not a huge difference, but noticeable to me.

I put headers on my car, and along with the stock muffler, it’s perfect. The ZL1 “suitcase” muffler doesn’t produce any noticeable drone/resonance, which is maybe why it seems quieter than a Z06. I had a really similar setup on both of my C6s (headers into stock ZR1 mufflers), and there was quite a bit of drone. I don’t think WOT was any louder than my ZL1, but you could hear it more inside the car. If that makes sense.

05-21-2018, 07:52 PM	#1
Drew303 Drives: 2018 ZL1 Join Date: May 2018 Location: Denver, CO Posts: 19	Stock exhaust-why so quiet? So I had a c7 Z06 before my ZL1, and you could always hear the exhaust no matter what. Full throttle, cruising, etc. In my Zl1 its super super quiet unless you are on the gas even in track mode. Is this just the stock exhaust being different? If I swap it out will I get the growl im looking for?

05-21-2018, 08:33 PM	#2
Gunkk Thank you Al Oppenheiser! Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017 Location: Sarasota, FL Posts: 4,975 View My Garage	Pull fuse 51 before spending one dime.

05-21-2018, 09:28 PM	#4
Drew303 Drives: 2018 ZL1 Join Date: May 2018 Location: Denver, CO Posts: 19	what does fuse 51 do?

05-21-2018, 09:41 PM	#5
R3ctivision 1LE Convert Drives: 2018 ZLE Join Date: Apr 2017 Location: Mountain View, CA Posts: 367	Does ZL1 come stock with NPP? If so, and you are in track mode, I'm surprised you find it quiet. SS 1LE in track mode hits about 97 dB.

05-21-2018, 10:46 PM	#7
Can'tHave2MuchHP Drives: Fast Join Date: Mar 2015 Location: Michigan Posts: 3,696	Corsa Xtreme for me. I have a C7 Z06 too and there definitely louder. But both cars rock Corsa Xtreme systems.

05-21-2018, 11:46 PM	#8
ninetres Drives: Crush ZLE M6 \| 2000 Corvette FRC Join Date: Jun 2010 Location: Cencal Posts: 1,659	Pulling the fuse made absolutely no difference on my ZL1 from track mode. Cruise, part throttle, WOT.....all identical with our without fuse pulled.

05-21-2018, 11:53 PM	#9
Gonasurvive Drives: 17 ZL1 MBM M6 Join Date: Mar 2017 Location: Oregon Posts: 101	I wonder how much sound the back seat and cabin damper the sound. I have been tempted to drop the back seat to find out. I only really hear the car with the windows and sunroof open.

05-22-2018, 01:16 AM	#10
mdmoore23 Drives: 2017 ZL1 Join Date: Jun 2012 Location: Graniteville,SC Posts: 645	Pulling fuse 51 will not satisfy someone who truly wants a louder exhaust. I installed a Kooks axleback and omg does it wake the car up. The dual mode function is lost but I never used it anyway. Here's a cold start video. I'm gonna get around to making a proper exhaust vid one of these days. It's the best sounding axleback I've heard on these cars. https://youtu.be/LM8Rkb9na8k

05-22-2018, 07:59 AM	#12
BlaqWhole Account Suspended Drives: 2017 Camaro ZL1 A10 Join Date: May 2012 Location: NJ Posts: 7,692	Fuse pull was a thing on the 5th Gens. But it doesn't do anything significant if anything at all on the 6th Gens. Your best bet would be an aftermarket axle-back or cat-back. A cat-back will sound much better, much louder, and you'll get rid of that crushed pipe section. That's the way I would go if I were you.

05-22-2018, 08:45 AM	#13
DangerZL1 Drives: 2023 Black ZL1 Auto Join Date: Oct 2009 Location: FEMA Region 4 Posts: 2,935	The C7 has an open hatch area behind the seats. The Camaro's trunk and rear seats isolate the passenger compartment from the exhaust compared to the Corvette.

05-22-2018, 09:27 AM	#14
BMWM.D. Drives: ZL1/335i Join Date: Apr 2014 Location: Santa Barbara Posts: 870	This has been mentioned a million times, but pulling the fuse really only gives you a little more sound at steady cruise and light throttle positions vs track mode. Definitely not a huge difference, but noticeable to me. I put headers on my car, and along with the stock muffler, it’s perfect. The ZL1 “suitcase” muffler doesn’t produce any noticeable drone/resonance, which is maybe why it seems quieter than a Z06. I had a really similar setup on both of my C6s (headers into stock ZR1 mufflers), and there was quite a bit of drone. I don’t think WOT was any louder than my ZL1, but you could hear it more inside the car. If that makes sense.

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