L99 Camaro SS/RS Automatic - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Elvis · 10-07-2013, 08:04 PM

Need to talk to someone who has a L99 with Automatic transmission that has had the Exhaust revised for more of a muscle car sound without the Drone inside or outside when the engine goes from 8 cylinders to 4 cylinders.

Who has done this with out the drone issue and what specifically Have you changed and does it void the Warranty ?

I do not plan to change the Cats, wonder if I can keep the stock resonator...would like to delete stock mufflers only and straight pipe out and end up with stock tips ....but have been told it will not pass inspection without mufflers ?

Who has success with muscle car sound with a L99 Automatic Transmission ?

Much different than LS3 engine per drone issues going from 8 to 4 cylinders.

Need help please...

THANKS,

LATER

954camaro · 10-07-2013, 08:13 PM

What do you mean the ls3 engine going from 8 cylinder to 4????
Only the automatics do that!

If you are really want a muscle car sound that doesn't have to much drone you I would say go with the s type borla muffler I love mine so much! It's quiet when I want it to be but when I WOT it's a muscle car sound for sure!

However no matter what you do if you change out your muffler for any other kind of brand you want to ether get a "range" because it disables the AFM. Or you can tune the car to get ride of it but you will lose your powertrain warranty.

954camaro · 10-07-2013, 08:16 PM

If you don't know what the AFM is....
It's the thingy that makes the 8 cylinders go down to 4 to save fuel.
Active.Fuel.Mangement

grocerygetter · 10-07-2013, 08:22 PM

Had a custom magna flow built...kept it 2.5", used a tru-x and mag. Mufflers and mag. Resonated tips. No drone.

litle88 · 10-07-2013, 08:54 PM

Tune that crap out! Or get a corsa catback

Blake_GM · 10-07-2013, 09:03 PM

SOLO axleback with J-Pipes.

Bsanf21 · 10-07-2013, 09:14 PM

tune it

BAD DAB · 10-07-2013, 09:15 PM

Quote:

Originally Posted by Blake_GM

SOLO axleback with J-Pipes.

Jeffm · 10-07-2013, 09:50 PM

my car when i first bought it i went straight pipes with resonator on it sounded good no drone in AFM mode.

myold88 · 10-07-2013, 09:54 PM

Quote:

Originally Posted by Blake_GM

SOLO axleback with J-Pipes.

This ^^^^^^ Simple, inexpensive, and the best deep sound with no drone at any RPM.
I've had mine for over 2 years now and wouldn't change a thing.

SPCBA · 10-07-2013, 09:57 PM

If you like the tone but not the drone get j pipes

Elvis · 10-07-2013, 10:05 PM

Quote:

Originally Posted by grocerygetter

Had a custom magna flow built...kept it 2.5", used a tru-x and mag. Mufflers and mag. Resonated tips. No drone.

So if I understand, you left the stock cats and went 2.5 inch pipe, X pipe replaced the stock resonator, then to magna flow mufflers and magna flow resonator tips.

Understand all except the magna flow tips ? How are they different from stock tips ?

Is this correct ? No drone issues...

Is the magna flow muffler have a number ?

Would you happen to haves audio clip ?

Thanks for the information....

SS PANTHER · 10-08-2013, 05:47 AM

1

Quote:

Originally Posted by Elvis

Need to talk to someone who has a L99 with Automatic transmission that has had the Exhaust revised for more of a muscle car sound without the Drone inside or outside when the engine goes from 8 cylinders to 4 cylinders. If you don't want to tune get a Range AFM device to get rid of the 4 cylinder mode.

Who has done this with out the drone issue and what specifically Have you changed and does it void the Warranty ? Added the Solo high flow cats. 15rwhp and a nice sound. No tune, no drone, no CEL's. Any catback, cats, mufflers, headers (sans the GMPP axleback) will void your exhaust warranty. The cats are the easiest to r&r if needed

I do not plan to change the Cats, wonder if I can keep the stock resonator...would like to delete stock mufflers only and straight pipe out and end up with stock tips ....but have been told it will not pass inspection without mufflers ? With the high flow cats you keep the stock resonators. Why don't you want to change the cats? Fairly simple bolt on and the most horsepower your going to get out of your stock exhaust system. http://www.youtube.com/watch?feature...&v=qI1jOW2NvwU

Who has success with muscle car sound with a L99 Automatic Transmission ?

Much different than LS3 engine per drone issues going from 8 to 4 cylinders.

If you are planning bigger mods like headers, cam, FI, etc. just get it tuned.
Need help please...

THANKS,

LATER

JEFF75645 · 10-08-2013, 06:26 AM

I went with a "custom" x-pipe and Lingenfelter(made by Corsa) axle back. Total cost around $650. And get a tune.

10-07-2013, 08:04 PM	#1
Elvis Elvis is Camaro,s name Drives: 2010 Camaro 2SS/RS SIM L99 Auto Join Date: Oct 2011 Location: Texas Posts: 346 View My Garage	L99 Camaro SS/RS Automatic Need to talk to someone who has a L99 with Automatic transmission that has had the Exhaust revised for more of a muscle car sound without the Drone inside or outside when the engine goes from 8 cylinders to 4 cylinders. Who has done this with out the drone issue and what specifically Have you changed and does it void the Warranty ? I do not plan to change the Cats, wonder if I can keep the stock resonator...would like to delete stock mufflers only and straight pipe out and end up with stock tips ....but have been told it will not pass inspection without mufflers ? Who has success with muscle car sound with a L99 Automatic Transmission ? Much different than LS3 engine per drone issues going from 8 to 4 cylinders. Need help please... THANKS, LATER __________________ Elvis

10-07-2013, 08:13 PM	#2
954camaro Drives: Camaro SS/RS inferno red interior Join Date: Mar 2012 Location: Pompano Beach FL Posts: 817 View My Garage	What do you mean the ls3 engine going from 8 cylinder to 4???? Only the automatics do that! If you are really want a muscle car sound that doesn't have to much drone you I would say go with the s type borla muffler I love mine so much! It's quiet when I want it to be but when I WOT it's a muscle car sound for sure! However no matter what you do if you change out your muffler for any other kind of brand you want to ether get a "range" because it disables the AFM. Or you can tune the car to get ride of it but you will lose your powertrain warranty. __________________ SoFlo Muscle Car Group Miami/Broward

10-07-2013, 08:16 PM	#3
954camaro Drives: Camaro SS/RS inferno red interior Join Date: Mar 2012 Location: Pompano Beach FL Posts: 817 View My Garage	If you don't know what the AFM is.... It's the thingy that makes the 8 cylinders go down to 4 to save fuel. Active.Fuel.Mangement __________________ SoFlo Muscle Car Group Miami/Broward

10-07-2013, 08:22 PM	#4
grocerygetter instigator Drives: 2020 6.2 Trail Boss, 2022 XC90 Join Date: Jan 2010 Location: 72034 Posts: 3,979 View My Garage	Had a custom magna flow built...kept it 2.5", used a tru-x and mag. Mufflers and mag. Resonated tips. No drone. __________________ -John S.

10-07-2013, 08:54 PM	#5
litle88 V8 Lounge member #2 Drives: 2001 Ws6 Join Date: Sep 2009 Location: Burbank,IL Posts: 6,373	Tune that crap out! Or get a corsa catback __________________ 2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.

10-07-2013, 09:03 PM	#6
Blake_GM Drives: 2011 Camaro 2SS/RS in IBM Join Date: Apr 2010 Location: MO, USA Posts: 381 View My Garage	SOLO axleback with J-Pipes. __________________ 2011 Camaro 2SS w/RS, Imperial Blue Metallic - Toy. CAI Inc. cold air intake, SOLO axle-back with j-pipes, Kooks 1 7/8" long tube headers with Kooks high flow cats, GPI SS2 VVT cam + engine goodies and dyno tuned by Ryan/Dr. L99/GPI.

10-07-2013, 09:14 PM	#7
Bsanf21 Love me some Camaro's! Drives: 2010 Camaro SS Join Date: Apr 2013 Location: Pooler, GA Posts: 213 View My Garage	tune it

10-07-2013, 09:57 PM	#11
SPCBA Drives: pleather and Chiclets Join Date: Mar 2012 Location: a line somwhere Posts: 4,206 View My Garage	If you like the tone but not the drone get j pipes __________________ the power by www.cunningham-motorsports.com the brakes by www.RacingBrake.com

10-08-2013, 06:26 AM	#14
JEFF75645 Drives: his wife crazy buying mods Join Date: May 2012 Location: Gilmer, TX Posts: 1,342 View My Garage	I went with a "custom" x-pipe and Lingenfelter(made by Corsa) axle back. Total cost around $650. And get a tune. __________________ Gone But Not Forgotten