SW Retro Chambered - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

zz430camaro · 08-28-2018, 07:17 PM

Anyone know if there is any power loss with this system? Just wondering cause the inner diameter is only about 2.5 inches and those louvers look like they would slow down flow. Any data or dyno experence would be great.

Any droning or resonating with this either? I have a cam and headers.

InFiD3ViL · 08-28-2018, 08:27 PM

There is some debate on this. RPM Motorsports has a video on this, or the turbo muffler setup. Can't remember which.

I personally do not know if it's true, but I would not be surprised to find out it is based on their design. Apparently it is also an issue with their retro catback turbo muffler system too.

Damn shame, as these are some of the very best sounding exhausts out there. Some people have tried to get around it by removing one of the sets of mufflers, as the catback you are speaking of has 4 mufflers.

zz430camaro · 08-28-2018, 08:33 PM

Quote:

Originally Posted by InFiD3ViL

There is some debate on this. RPM Motorsports has a video on this, or the turbo muffler setup. Can't remember which.

I personally do not know if it's true, but I would not be surprised to find out it is based on their design. Apparently it is also an issue with their retro catback turbo muffler system too.

Damn shame, as these are some of the very best sounding exhausts out there. Some people have tried to get around it by removing one of the sets of mufflers, as the catback you are speaking of has 4 mufflers.

Can you find the video?

The S-Tube muffler is a stright through tube but the chambered muffler is a flow killer. I would hate to get the ZL1 retro system and lose power for 1400 bucks LOL

KB85 · 08-28-2018, 09:26 PM

Have it and made good power. 430 tsp stag 2 cam, 470 heads and couple small things, 504 all out build with l99 and large cam

TheInfamouSS · 08-29-2018, 08:33 PM

May not notice it on a regular NA setup, although you may get gains as well. All I know is that my friend had a turbo zl1 and took out all of the chambers and gained good power. I was on the dyno, some funky stuff happened with my fuel pump controller (Dave at DSX shipped out his new one immediately to my tuner ( Dave is an amazing guy to talk to and work with by the way), then on top of that the dyno PCB board took a shit the next day so I decided to get my exhaust done before it went back on. Had one decent WOT pass. I ended up removing all of the baffles and putting Pypes M80's on the back. And even on that same tune my car made considerably more power.

Car is loud as ever, but sounds like a good old fashioned muscle car. A nice slice of America. Love the sound of the Retro Chambered mufflers as well, but where im going with this build im more worried about the gains. No restrictions in my life. Not even on my ECS kit lol.

trodecke · 08-30-2018, 03:27 PM

A fellow Camaro6'er has the full Stainlessworks on his Camaro (Matt from Lethal Garage). He just removed the resonators and you can see from this video what happened (if you're not a youtube fan, he gained some horsepower).

https://youtu.be/DadA8hjfOuQ

zz430camaro · 08-30-2018, 04:10 PM

Quote:

Originally Posted by trodecke

A fellow Camaro6'er has the full Stainlessworks on his Camaro (Matt from Lethal Garage). He just removed the resonators and you can see from this video what happened (if you're not a youtube fan, he gained some horsepower).

https://youtu.be/DadA8hjfOuQ

From what I have seen the chambered pipes do lower power some. Its more obvious on high power cars like Matt's but I'm sure its taking some away on the NA cars too.

TRC-SS · 09-01-2018, 07:56 AM

OK so i have this system paired with Stainless work Long Tube headers and no cats. Car has forged motor, cam and supercharged.

I wanted a bit more of bark out of the exhaust and i ended up cutting out the 2 middle mufflers leaving only 2 of those in the rear.

At the time i had just been on the dyno with the car and went back on the dyno after removing the middle 2 mufflers.

In my case the car picked up 15rwhp. It definitely felt a bit better but the drone was ridiculous and just the other day welded them back into place.

This is a constant finding since i have QTP cutouts right behind the headers and when i open them on the dyno i gain 11rwhp.

If i were to switch systems completely i bet my HP would definitely go up

KB85 · 09-01-2018, 08:10 AM

I have a flowmaster system sitting in garage. Maybe I’ll test it out with track times this fall. Not sure where I can get a Dyno to test it without paying more than I’d want

zz430camaro · 09-01-2018, 12:42 PM

i guess at the end of the day you can't have it all, if you want to enjoy the ride without ridiculous drone you are going to sacrafice power with a quieter system, just a fact.

It just sucks that most of these systems are 1000+ dollars so to buy one and not like it is a major hit and a disappointing one.

Stormcloak · 09-01-2018, 03:05 PM

I have these w/ the SW headers, high flow cats, Rotofab, and a tune. 420 at the wheels, and I really do love the sound of them. I'd be curious to see what the hp gain is on a NA motor by switching to no resonators.

zz430camaro · 09-01-2018, 06:49 PM

Quote:

Originally Posted by Stormcloak

I have these w/ the SW headers, high flow cats, Rotofab, and a tune. 420 at the wheels, and I really do love the sound of them. I'd be curious to see what the hp gain is on a NA motor by switching to no resonators.

Be interesting to see that, id like to compare it to a full true 3 inch system, no 2.5" cat connection.

trodecke · 09-01-2018, 09:45 PM

Quote:

Originally Posted by zz430camaro

It just sucks that most of these systems are 1000+ dollars

And I don't really know why either. It's not like the pipes are gold plated or anything like that. My son put a magnaflow on his truck and did a cat delete. Total cost was about $200, labor included, at a reputable place in Norman. A big reason I've not pulled the trigger on the SW system myself is I can't convince my wife that there's not really a less expensive solution out there.

zz430camaro · 09-01-2018, 09:59 PM

Quote:

Originally Posted by trodecke

And I don't really know why either. It's not like the pipes are gold plated or anything like that. My son put a magnaflow on his truck and did a cat delete. Total cost was about $200, labor included, at a reputable place in Norman. A big reason I've not pulled the trigger on the SW system myself is I can't convince my wife that there's not really a less expensive solution out there.

No doubt, why dont they offer these systems in aluminzed steel to keep cost down. I dont care if they are stainless.

08-28-2018, 07:17 PM	#1
zz430camaro Drives: 2015 1LE Join Date: Oct 2015 Location: Cleveland, OH Posts: 1,485	SW Retro Chambered Anyone know if there is any power loss with this system? Just wondering cause the inner diameter is only about 2.5 inches and those louvers look like they would slow down flow. Any data or dyno experence would be great. Any droning or resonating with this either? I have a cam and headers. Last edited by zz430camaro; 08-28-2018 at 08:05 PM.

08-28-2018, 08:27 PM	#2
InFiD3ViL Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016 Location: Spring Hill, FL Posts: 4,575	There is some debate on this. RPM Motorsports has a video on this, or the turbo muffler setup. Can't remember which. I personally do not know if it's true, but I would not be surprised to find out it is based on their design. Apparently it is also an issue with their retro catback turbo muffler system too. Damn shame, as these are some of the very best sounding exhausts out there. Some people have tried to get around it by removing one of the sets of mufflers, as the catback you are speaking of has 4 mufflers. __________________ 2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4, 7º overlap) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP 1-7/8" long tube headers (W/Catless Off-road Pipes), Corsa Xtreme 3" Catback, GPI Ported/Rod Mod Intake, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), MRR M017 10/11" wheels-Tuned by Ryan @ GPI

08-29-2018, 08:33 PM	#5
TheInfamouSS @LS.ACE Drives: 2014 Chevy Camaro 2SS/1LE Join Date: Jan 2017 Location: North Jersey Posts: 296	May not notice it on a regular NA setup, although you may get gains as well. All I know is that my friend had a turbo zl1 and took out all of the chambers and gained good power. I was on the dyno, some funky stuff happened with my fuel pump controller (Dave at DSX shipped out his new one immediately to my tuner ( Dave is an amazing guy to talk to and work with by the way), then on top of that the dyno PCB board took a shit the next day so I decided to get my exhaust done before it went back on. Had one decent WOT pass. I ended up removing all of the baffles and putting Pypes M80's on the back. And even on that same tune my car made considerably more power. Car is loud as ever, but sounds like a good old fashioned muscle car. A nice slice of America. Love the sound of the Retro Chambered mufflers as well, but where im going with this build im more worried about the gains. No restrictions in my life. Not even on my ECS kit lol. __________________ Some weird snail with a belt on it \| Tial Q Bov \| CCP Jam Cam \| Stainless Works 1 7/8" Headers to Custom 3" Exhaust \| Alky Control Dual Nozzle\| ProMeth Trunk Mount Tank \| Melling Oil Pump \| DSX Aux Pump \| id1050x Injectors \| McLeod RXT w/ Monster Billet Release Bearing \| ZL1 3.73 Rear Diff \| BMR Delrin/Poly Diff Bushings \| DSS 1-Piece Aluminum Driveshaft \| ZL1 Axles \| Metco Driveshaft Loop \| BMR Adjustable LCA's, TA's, Toe Rods \| BMR Adjustable Sway Bar w/ Fe3 End Links \| Mickey Thompson 305/35-20 Street S/S Drag Radials \|

08-30-2018, 03:27 PM	#6
trodecke Drives: 2014 2SS/RS CRT Join Date: Apr 2014 Location: Oklahoma City, OK Posts: 365	A fellow Camaro6'er has the full Stainlessworks on his Camaro (Matt from Lethal Garage). He just removed the resonators and you can see from this video what happened (if you're not a youtube fan, he gained some horsepower). https://youtu.be/DadA8hjfOuQ __________________ Lifetime Camaro guy. 1979 Z28, 1987 LT, 2012 2LS, 2014 2SS/RS --CAI Cold Air Intake --Solo HFC

09-01-2018, 07:56 AM	#8
TRC-SS 700RWHP-650TQ Drives: 2011 Forged LS3 Supercharged/Cammed Join Date: Aug 2010 Location: Shrewsbury Massachusetts Posts: 5,269 View My Garage	OK so i have this system paired with Stainless work Long Tube headers and no cats. Car has forged motor, cam and supercharged. I wanted a bit more of bark out of the exhaust and i ended up cutting out the 2 middle mufflers leaving only 2 of those in the rear. At the time i had just been on the dyno with the car and went back on the dyno after removing the middle 2 mufflers. In my case the car picked up 15rwhp. It definitely felt a bit better but the drone was ridiculous and just the other day welded them back into place. This is a constant finding since i have QTP cutouts right behind the headers and when i open them on the dyno i gain 11rwhp. If i were to switch systems completely i bet my HP would definitely go up __________________ View Build HERE>>>>>MY 2011 2SS/RS JOURNAL

08-28-2018, 09:26 PM	#4
KB85 Banned Drives: Camaro Join Date: Aug 2018 Location: Ohio Posts: 54	Have it and made good power. 430 tsp stag 2 cam, 470 heads and couple small things, 504 all out build with l99 and large cam

09-01-2018, 08:10 AM	#9
KB85 Banned Drives: Camaro Join Date: Aug 2018 Location: Ohio Posts: 54	I have a flowmaster system sitting in garage. Maybe I’ll test it out with track times this fall. Not sure where I can get a Dyno to test it without paying more than I’d want

09-01-2018, 12:42 PM	#10
zz430camaro Drives: 2015 1LE Join Date: Oct 2015 Location: Cleveland, OH Posts: 1,485	i guess at the end of the day you can't have it all, if you want to enjoy the ride without ridiculous drone you are going to sacrafice power with a quieter system, just a fact. It just sucks that most of these systems are 1000+ dollars so to buy one and not like it is a major hit and a disappointing one.

09-01-2018, 03:05 PM	#11
Stormcloak slower than you Drives: 2012 C6 Z06 Join Date: Oct 2015 Location: NY Posts: 668 View My Garage	I have these w/ the SW headers, high flow cats, Rotofab, and a tune. 420 at the wheels, and I really do love the sound of them. I'd be curious to see what the hp gain is on a NA motor by switching to no resonators. __________________