Efficient but not crazy loud exhaust - ls3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

camarogofast · 02-21-2018, 10:32 AM

Hey all. Just bought my first Camaro SS with the ls3. I'd like to open up the exhaust with 3" pipes to let more air run through for some power and better mpgs but I don't want to wake the dead when I'm driving down the road or attract any unwanted legal presences. Not very familiar with what's out there. Anyone have any suggestions?

mpsgolf · 02-21-2018, 10:53 AM

Same as you I wanted power sound but not too loud. I went SW Retro catbacks and am happy.

*mlee* · 02-21-2018, 11:02 AM

3" is not going to open anything up for more power. In fact you'll see very little if any power gains on a cat back exhaust system.
Headers + tune will add power but also will increase the noise level quite a bit.
Corsa is a great one for keeping things tame (no drone at any level) and excellent for cruising without waking the dead.

Once you start modding further with headers and cam that's when things start to get loud.

patternpilot · 02-21-2018, 09:50 PM

I have Corsa and it is obnoxiously loud but no drone. Installed the stock resonators back into the pipes to help and it almost did nothing. I have ordered the Flowmaster Force 2 axle backs to see if that will help. If I have to I will install some mini bullets just in front of the mufflers. I also have some 200 cell cats to install in the spring. I'll get this thing under control somehow. Corsa was good until I did the engine work, installed headers and removed the cats, all at the same time.

rtcat600man · 02-22-2018, 04:23 AM

FYI.........this is posted in the V6 section. Should be moved over to the V8 section for more attention.

acammer · 02-22-2018, 05:37 AM

Quote:

Originally Posted by camarogofast

Hey all. Just bought my first Camaro SS with the ls3. I'd like to open up the exhaust with 3" pipes to let more air run through for some power and better mpgs but I don't want to wake the dead when I'm driving down the road or attract any unwanted legal presences. Not very familiar with what's out there. Anyone have any suggestions?

If you're looking for more performance and a nice tame exhaust note long tube headers, high flow cats, and an x-pipe sounds really nice through the stock exhaust on an LS3. It's very calm until you really dig into it, and then it has a pretty nice wail to it. Cat-back won't gain you any power, but long tubes and high flow cats definitely will.

02-21-2018, 10:32 AM	#1
camarogofast Drives: 2012 Camaro SS/RS Join Date: Feb 2018 Location: Rockville MD Posts: 1	Efficient but not crazy loud exhaust - ls3 Hey all. Just bought my first Camaro SS with the ls3. I'd like to open up the exhaust with 3" pipes to let more air run through for some power and better mpgs but I don't want to wake the dead when I'm driving down the road or attract any unwanted legal presences. Not very familiar with what's out there. Anyone have any suggestions?

02-21-2018, 10:53 AM	#2
mpsgolf Drives: 2012 Camaro SS Transformer Join Date: Sep 2013 Location: St Louis Missouri Posts: 501	Same as you I wanted power sound but not too loud. I went SW Retro catbacks and am happy. __________________ 2012 Camaro SS Transformer Mods: trunk subwoofer and amp, LED lighting (fogs, interior, trunk), skip shift eliminator, CAI cold air kit, Vmax ported throttle body, Stainless Works retro chambered cat back, JBA Cat4ward SS ceramic coated headers Potential Next Mods: Tune, F&R sway bars, rear cradle bushing inserts and trailing arms

02-21-2018, 11:02 AM	#3
mlee CamaroFans.com Drives: ZLE & ZR2 Join Date: Oct 2008 Location: Conroe, TX Posts: 37,486 View My Garage	3" is not going to open anything up for more power. In fact you'll see very little if any power gains on a cat back exhaust system. Headers + tune will add power but also will increase the noise level quite a bit. Corsa is a great one for keeping things tame (no drone at any level) and excellent for cruising without waking the dead. Once you start modding further with headers and cam that's when things start to get loud. __________________

02-21-2018, 09:50 PM	#4
patternpilot Drives: 2012 2SS/RS Join Date: Aug 2011 Location: Tri-Cities WA. Posts: 928 View My Garage	I have Corsa and it is obnoxiously loud but no drone. Installed the stock resonators back into the pipes to help and it almost did nothing. I have ordered the Flowmaster Force 2 axle backs to see if that will help. If I have to I will install some mini bullets just in front of the mufflers. I also have some 200 cell cats to install in the spring. I'll get this thing under control somehow. Corsa was good until I did the engine work, installed headers and removed the cats, all at the same time. __________________ There's more to life than gas mileage LS3, Whipple, Custom Comp Cam, springs, pushrods, timing set, CAI intake, Apex cold air scoop, Doug Thorley TRI-Y headers, Billet Custom Products baffled Valve covers, Mighty Mouse Catch can, ADM FPCM, ZL1 fuel pump, MSD boost-a-pump, Hex Vent hood vents, ProSport gauges(fuel pressure, AFR, Boost), Corsa, 100 cell Cats. Jannetty remote tuned, Pfadt trailing arms, all parts user installed. No Dyno yet. Manual trans. 3.45 gears.

02-22-2018, 04:23 AM	#5
rtcat600man having FUN now 13.66@101 Drives: 2010 2LT IOM Join Date: Nov 2009 Location: Clarkston, Michigan Posts: 9,230 View My Garage	FYI.........this is posted in the V6 section. Should be moved over to the V8 section for more attention. __________________ MY BUILD