Exhaust Note difference between L99 and LS3? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Supermans · 11-02-2008, 01:10 AM

I know it is hard to describe sound but for those that have heard both, what is the exhaust note difference going to be between the L99 and LS3 at startup and idle? Obviously once AFM kicks in and the engine is running at 4 cylinders, the exhaust note changes, however is there much of a difference between the two in the other area's considering it is practically the same engine? I saw those pictures of Scott and the team with the headphones on so he might be the only one in this forum who can answer this.

*GTAHVIT* · 11-02-2008, 09:42 AM

My guess is there will be no difference when all 8 cyls are running. The Cam is a little more mild in the L99 so that could change the "sound" of the engine a little. But I'm betting the exhaust notes will be pretty damn close to each other.

ChevyBoiSS · 11-02-2008, 07:49 PM

this is a very good question. I would like someone high up to look into this.

Supermans · 11-03-2008, 12:53 PM

Anyone else can chime in.

*CamaroSpike23* · 11-03-2008, 04:07 PM

when cruising you wont even notice it (you might notice the lack of a tone due to half the sound being created).

Scott has said already they are working on the regular sound as with the AFM, it sounds slightly different than the LS3, not bad, just different.

honestly as long as it sounds strong and sounds mean when you get on the throttle, i could care less how it sounds when im cruising.

454lsxss · 11-03-2008, 04:56 PM

I remember reading one of scott's posts that said they had to change up the exhaust on L99. When 4cyl mode chimes in it is said to make a funny noise...so he said it would be slightly more resonated.

*DGthe3* · 11-03-2008, 07:28 PM

I imagine that the exhaust will be a bit quieter on the L99 than on the LS3 Camaros because of what a 3.1L V4 would sound like.

wavrun2000 · 11-03-2008, 07:37 PM

I don't really care what is sounds like stock cause the fist thing i am going to change is the exhaust

Matrix · 11-03-2008, 10:54 PM

Quote:

Originally Posted by wavrun2000

I don't really care what is sounds like stock cause the fist thing i am going to change is the exhaust

Ditto, but I dont want mine to drone all the time. I only want the growl when I WOT so it will be a CIA upgrade for me, prolly K&N.

wavrun2000 · 11-04-2008, 09:11 AM

Yeah i want something that is loud but not like straight pips they are not a controlled enough of a sound.

D1BADZ · 11-04-2008, 10:18 AM

Cut the mufflers out and run 4" tips out the back, or turndowns if cost is a factor, that shouldnt prompt any check engine lights

*The_Blur* · 11-04-2008, 11:11 AM

I actually don't mind that the AFM will be quiet when cruising. It would be fun to mash the pedal next to some unsuspecting Mustang owner just to give them a jolt.

69 Hugger · 11-05-2008, 07:37 PM

Does the car run on 4 cyl at idle ? someone help me over the fence

TainoWarrior316 · 11-05-2008, 07:44 PM

Quote:

Originally Posted by The_Blur

I actually don't mind that the AFM will be quiet when cruising. It would be fun to mash the pedal next to some unsuspecting Mustang owner just to give them a jolt.

LMAO couldnt agree more with you. Chevy is going to have so many lawsuits from mustang owners. The camaro is going to break so many wanna be poser muscle car mustang nubs.

*DGthe3* · 11-05-2008, 09:23 PM

Quote:

Originally Posted by 69 Hugger

Does the car run on 4 cyl at idle ? someone help me over the fence

no. Only when cruising above a certain speed

BeermanSS · 11-05-2008, 10:10 PM

has anybody heard an escalade with aftermarket exhaust on it? Probably be pretty close. The L99 is in the escalade, denali, some silverado's.

SemperFi · 11-09-2008, 12:17 AM

Quote:

Originally Posted by The_Blur

I actually don't mind that the AFM will be quiet when cruising. It would be fun to mash the pedal next to some unsuspecting Mustang owner just to give them a jolt.

Or let that mom in the mini van talking on her cell phone know that she shouldnt be in the fast lane. (people just cruising in the fast lane is a serious pet peeve of mine. Especially when they make me break my cruise control. Errr)

JiXeR'z DoDgE/FoRd KiLLeR · 11-09-2008, 04:49 AM

Quote:

Originally Posted by Matrix

Ditto, but I dont want mine to drone all the time. I only want the growl when I WOT so it will be a CIA upgrade for me, prolly K&N.

Check into Corsa...they sell mufflers that are tuned not to drone.

Jak · 11-09-2008, 11:42 AM

I could live with that.

Quote:

Originally Posted by CamaroSpike23

when cruising you wont even notice it (you might notice the lack of a tone due to half the sound being created).

Scott has said already they are working on the regular sound as with the AFM, it sounds slightly different than the LS3, not bad, just different.

honestly as long as it sounds strong and sounds mean when you get on the throttle, i could care how it sounds when im cruising.

rayhawk · 11-09-2008, 12:14 PM

I think the real issue is that you don't want to hear everytime the engine goes from 4 to 8 cylinder mode. If you have a loud exhaust, every time you give it a little gas to pass someone, you would hear it fire up the other cylinders, and then as soon as you let off, you would hear it drop those cylinders. I would imagine that would be annoying.

*CamaroSpike23* · 11-09-2008, 03:52 PM

Quote:

Originally Posted by rayhawk

I think the real issue is that you don't want to hear everytime the engine goes from 4 to 8 cylinder mode. If you have a loud exhaust, every time you give it a little gas to pass someone, you would hear it fire up the other cylinders, and then as soon as you let off, you would hear it drop those cylinders. I would imagine that would be annoying.

not as annoying as twin cutouts dumping right off the headers for 2000mile roundtrip

blackZbandit · 11-09-2008, 05:57 PM

Quote:

Originally Posted by rayhawk

I think the real issue is that you don't want to hear everytime the engine goes from 4 to 8 cylinder mode. If you have a loud exhaust, every time you give it a little gas to pass someone, you would hear it fire up the other cylinders, and then as soon as you let off, you would hear it drop those cylinders. I would imagine that would be annoying.

I would actually like that very much.

rayhawk · 11-09-2008, 07:51 PM

Quote:

Originally Posted by blackZbandit

I would actually like that very much.

Well, what I mean is that it might not sound like you expect or would like in 4cylinder mode. Also, I think it drops into and out of 4 cyl. mode pretty regularly as load changes and depending on the change of tone it may be kind of annoying difference instead of a steady sound. Then again, maybe it is not that big of a deal.

11-02-2008, 01:10 AM	#1
Supermans Camaro & Stang Enthusiast Drives: 2011 Mustang 5.0 in Kona Blue Join Date: Mar 2008 Location: Miami Posts: 4,759 View My Garage	Exhaust Note difference between L99 and LS3? I know it is hard to describe sound but for those that have heard both, what is the exhaust note difference going to be between the L99 and LS3 at startup and idle? Obviously once AFM kicks in and the engine is running at 4 cylinders, the exhaust note changes, however is there much of a difference between the two in the other area's considering it is practically the same engine? I saw those pictures of Scott and the team with the headphones on so he might be the only one in this forum who can answer this. __________________ Bought my Camaro from Eric Hall(817) 421-7266

11-02-2008, 09:42 AM	#2
GTAHVIT One Lucky Guy. Drives: #22 Tom Henry Racing 2010 2SS/RS Join Date: Dec 2007 Location: Saint Augustine FL Posts: 28,402 View My Garage	My guess is there will be no difference when all 8 cyls are running. The Cam is a little more mild in the L99 so that could change the "sound" of the engine a little. But I'm betting the exhaust notes will be pretty damn close to each other. __________________ Click image to see build thread. PQ - "the love of cars. It's a boys first step toward manhood and a mans last hold on boyhood." Fbodfather - "We do not want to use the Z28 moniker on a car that does not deserve this hallowed name." The_Blur - "Let's not confuse competitors with equals."

11-03-2008, 12:53 PM	#4
Supermans Camaro & Stang Enthusiast Drives: 2011 Mustang 5.0 in Kona Blue Join Date: Mar 2008 Location: Miami Posts: 4,759 View My Garage	Anyone else can chime in. __________________ Bought my Camaro from Eric Hall(817) 421-7266

11-03-2008, 07:28 PM	#7
DGthe3 Moderator.ca Drives: 05 Grand Am GT Join Date: Jul 2007 Location: Niagara, Canada Posts: 20,804	I imagine that the exhaust will be a bit quieter on the L99 than on the LS3 Camaros because of what a 3.1L V4 would sound like. __________________ Note, if I've gotten any facts wrong in the above, just ignore any points I made with them __________________ Quote: In 2014 the camaro will have ... a twin turbo v6 ... around 350 to 360HP No. Let me repeat that. No. FbodFather __________________ Camaro5 Fest III Information Camaro5 Fest III pre-registration

11-04-2008, 11:11 AM	#12
The_Blur Moderator, USN Drives: 2000 Firebird Formula NHRA SE Join Date: Nov 2007 Location: Officer Candidate School Posts: 12,713	I actually don't mind that the AFM will be quiet when cruising. It would be fun to mash the pedal next to some unsuspecting Mustang owner just to give them a jolt. __________________ Get a good deal on your purchase. Read this. 117:123 RESPECT ALL CARS. LOVE YOUR OWN. newborn gifts

11-02-2008, 07:49 PM	#3
ChevyBoiSS Drives: 2006 Monte Carlo SS Join Date: Oct 2008 Location: Chicago, IL Posts: 299	this is a very good question. I would like someone high up to look into this.

11-03-2008, 04:56 PM	#6
454lsxss Drives: 07 Scion tC. for now... Join Date: Mar 2008 Location: dallas, tx Posts: 122	I remember reading one of scott's posts that said they had to change up the exhaust on L99. When 4cyl mode chimes in it is said to make a funny noise...so he said it would be slightly more resonated.

11-03-2008, 07:37 PM	#8
wavrun2000 o come on Drives: 06 GTO Join Date: Nov 2008 Location: Naples FL Posts: 447	I don't really care what is sounds like stock cause the fist thing i am going to change is the exhaust

11-04-2008, 09:11 AM	#10
wavrun2000 o come on Drives: 06 GTO Join Date: Nov 2008 Location: Naples FL Posts: 447	Yeah i want something that is loud but not like straight pips they are not a controlled enough of a sound.

11-04-2008, 10:18 AM	#11
D1BADZ hmmmmm Drives: 2010 IOM in-n-out 2SS Join Date: Oct 2008 Location: San Jose, Ca Posts: 1,327 View My Garage	Cut the mufflers out and run 4" tips out the back, or turndowns if cost is a factor, that shouldnt prompt any check engine lights

11-05-2008, 07:37 PM	#13
69 Hugger Drives: 69 Convertible Camaro Join Date: Sep 2008 Location: Sumit Point, WV Posts: 945 View My Garage	Does the car run on 4 cyl at idle ? someone help me over the fence Last edited by 69 Hugger; 11-05-2008 at 07:49 PM.

11-05-2008, 10:10 PM	#16
BeermanSS Drives: 2005 Cobalt SS/SC Join Date: Nov 2008 Location: Wilson, NY Posts: 214	has anybody heard an escalade with aftermarket exhaust on it? Probably be pretty close. The L99 is in the escalade, denali, some silverado's.

11-09-2008, 12:14 PM	#20
rayhawk Drives: Trailblazer SS Join Date: Aug 2008 Location: Miami Posts: 836 View My Garage	I think the real issue is that you don't want to hear everytime the engine goes from 4 to 8 cylinder mode. If you have a loud exhaust, every time you give it a little gas to pass someone, you would hear it fire up the other cylinders, and then as soon as you let off, you would hear it drop those cylinders. I would imagine that would be annoying. __________________ Hooters, hooters, yum yum yum, hooters, hooters on a girl thats dumb. -Al Bundy 07 2WD Trailblazer SS, LS1 E-fans, 4" FWI, pcmforless tune 72 VW Beetle, 2275cc, Dual 44 IDF's

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