Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
Phastek Performance
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons


Reply
 
Thread Tools
Old 04-07-2010, 04:21 PM   #1
jpgoins
 
Drives: 2008 Malibu LTZ 3.6/6A
Join Date: Apr 2009
Location: Houston, Tx
Posts: 25
So we dissected an L99 resonator today....

I am a GM ASEP instructor at San Jacinto College as well as a Camaro fanatic (unfortunately, my dad's the one that owns it). During Engine Performance class we were talking about Active Displacement. My dad had replaced his resonator on his 2SS (L99) with an x-pipe and was stunned at the discoloration of the resonator and the improvement in performance after replacing it. BTW, theres about 6K miles on the resonator. Our welding department has a very talented craftsman, Hector, who did the dissection for us. I was curious as to the design and why there would be so much heat buildup. Here's the pics.....
Attached Images
          
jpgoins is offline   Reply With Quote
Old 04-07-2010, 04:25 PM   #2
RedJewel2SS
12.23s@113mph
 
RedJewel2SS's Avatar
 
Drives: 2SS/RS, A6, just a few bolt ons
Join Date: Jul 2009
Location: Houston, TX
Posts: 1,199
nicely done... now i know what i got rid of!
__________________

RIP Cammie 7/15/2009 - 4/1/2011
RedJewel2SS is offline   Reply With Quote
Old 04-07-2010, 04:29 PM   #3
duffmobile
 
duffmobile's Avatar
 
Drives: 2010 Camaro 2SS/RS - IOM/IOM
Join Date: Mar 2009
Location: Frankfort, IL
Posts: 376
thats an ugly SOB
duffmobile is offline   Reply With Quote
Old 04-07-2010, 05:27 PM   #4
Robert91RS

 
Robert91RS's Avatar
 
Drives: Everywhere
Join Date: Jun 2008
Location: TX
Posts: 852
That looks like it would act more as a muffler than the two hollow trash cans behind the rear fascia.
Robert91RS is offline   Reply With Quote
Old 04-07-2010, 05:29 PM   #5
2010 SSRS



 
2010 SSRS's Avatar
 
Drives: 3 V8 Camaros
Join Date: May 2009
Location: The Ocean State
Posts: 111,211
Boat anchor
__________________
Jannetty Racing JRE Street Package
2010 SSRS is offline   Reply With Quote
Old 04-07-2010, 05:38 PM   #6
Jekyll-N-Hyde
I put the FU back in FUN
 
Jekyll-N-Hyde's Avatar
 
Drives: 1969 SS 396 , 2010 Camaro SS
Join Date: Jun 2009
Location: Between Weatherford and Azle TX hway730
Posts: 2,133
RESTRICTIVEEEEEEEEEEEEEEEEEEEEEEEEEEE




And yes a Boat Anchor
Jekyll-N-Hyde is offline   Reply With Quote
Old 04-07-2010, 09:40 PM   #7
jpgoins
 
Drives: 2008 Malibu LTZ 3.6/6A
Join Date: Apr 2009
Location: Houston, Tx
Posts: 25
@RedJewel2SS....love the heritage grill!
jpgoins is offline   Reply With Quote
Old 04-07-2010, 09:41 PM   #8
jordan 572

 
jordan 572's Avatar
 
Drives: none
Join Date: Jul 2008
Location: MN
Posts: 1,720
What do these things do that only the l99 need them and not the ls3
jordan 572 is offline   Reply With Quote
Old 04-07-2010, 09:53 PM   #9
JHart
I haz camaro again :)
 
JHart's Avatar
 
Drives: 2010 Chevrolet Camaro 1SS
Join Date: Mar 2009
Location: Union, South Carolina
Posts: 664
keeps the AFM sound from being so pronounced
__________________
2010 Camaro 1SS(back in a camaro again, yessssss!)

2010 silverado z71 ccsb(sold, old dd)
2010 camaro1ss(sold, missed, will have another someday)
JHart is offline   Reply With Quote
Old 04-07-2010, 10:00 PM   #10
ron10


 
Drives: 2010 2SS IOM L99
Join Date: Jan 2010
Location: LOUISVILLE,KY..
Posts: 7,549
i don't want this on my car.
ron10 is offline   Reply With Quote
Old 04-08-2010, 03:17 PM   #11
ZYA_LTR
 
Drives: Waiting to be ordered
Join Date: Jun 2009
Location: Detroit, Michigan
Posts: 37
Just shows you that with a few select mods, the L99 would be closer in power to an LS3..Would be interesting to see a swap on an L99 car where they just change the exhaust over to an LS3 setup to see how many lost ponies in the exhaust...that resonator has got to account for quite a few dead horses.
ZYA_LTR is offline   Reply With Quote
Old 04-09-2010, 05:47 AM   #12
Sidewayz_510
 
Sidewayz_510's Avatar
 
Drives: 2010 BLK SS/RS & 2005 Range Rover
Join Date: Apr 2009
Location: EAST BAY AREA, CA
Posts: 46
Well done thanks for sharing
Sidewayz_510 is offline   Reply With Quote
Old 04-09-2010, 07:39 AM   #13
SGOS252382


 
SGOS252382's Avatar
 
Drives: 2010 Camaro 2SS/RS
Join Date: Mar 2008
Location: S.W. Florida
Posts: 6,300
Quote:
Originally Posted by ZYA_LTR View Post
Just shows you that with a few select mods, the L99 would be closer in power to an LS3..Would be interesting to see a swap on an L99 car where they just change the exhaust over to an LS3 setup to see how many lost ponies in the exhaust...that resonator has got to account for quite a few dead horses.
The L99 also uses different mufflers. They look the same on the outside, but they are very different on the inside. There are some pictures floating around the forum of the inside of the L99 mufflers. The LS3 muffers are a straight through muffler. The L99 mufflers have this crazy piping on the inside to help reduce AFM noises.
SGOS252382 is offline   Reply With Quote
Old 04-09-2010, 08:25 AM   #14
IPS Brandon
 
IPS Brandon's Avatar
 
Drives: 2010 Camaro SS black
Join Date: Aug 2009
Location: Columbus Ohio
Posts: 907
Send a message via AIM to IPS Brandon
Quote:
Originally Posted by SGOS252382 View Post
The L99 also uses different mufflers. They look the same on the outside, but they are very different on the inside. There are some pictures floating around the forum of the inside of the L99 mufflers. The LS3 muffers are a straight through muffler. The L99 mufflers have this crazy piping on the inside to help reduce AFM noises.
GM engineered this for those reasons, because logically peoples tonal expectations would be way off if they used a standard muffler system once AFM kicked in. Perception is everything, but I must say that like other members, its a boat anchor and get an aftermarket unit then tune out AFM.

Very neat

Regards
IPS Brandon is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Official 1/4 Mile (V8) 2010+ Camaro Fast List Merc Dragstrip and Launch Techniques Discussion 3288 12-01-2016 03:03 AM
2010 Camaro PCM Pin-out Description and Wire Colors (LS3 & L99) raptor Audio, Video, Bluetooth, Navigation, Radar, Electronics Forum 13 11-14-2015 05:07 AM
Unofficial 1/4 Mile (V8) 2010+ Camaro Fast List Merc Dragstrip and Launch Techniques Discussion 250 04-01-2014 11:40 AM
Check your Order here bvonscott Camaro Price | Ordering | Tracking | Dealers Discussions 665 06-29-2009 02:00 PM
L99 engine specifications Tran Wiki 0 10-19-2008 12:40 PM


All times are GMT -5. The time now is 11:48 AM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.