What's done to my exhaust?? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

GSoccerCam · 10-22-2016, 06:03 PM

Sooo I know the stock resonator Is replaced with maybe smaller resonators? I have stock cats and a borla axle back atak.. even with my mufflers off the car was quieter then I think it should have been.... but I might have an hpipe? Not sure why my car is reallly really quiet.. any helps or ideas on why its so quiet is appreciated ..

sdynak · 10-22-2016, 06:51 PM

Hi flow cats & long tube headers should give you more note.. Those look like LS3 resonators? Or are they some aftermarket?

LaN- · 10-22-2016, 06:56 PM

the H pipe is factory. Get rid of those resonators.

GSoccerCam · 10-22-2016, 07:31 PM

oh boy forgot i had my old car in my info .. yes this is a 2010 ls3 sorry about that. so wait. those are the stock resonators for an ls3? but an l99 has that big ugly rectangle thing?

sdynak · 10-22-2016, 07:36 PM

Quote:

Originally Posted by GSoccerCam

oh boy forgot i had my old car in my info .. yes this is a 2010 ls3 sorry about that. so wait. those are the stock resonators for an ls3? but an l99 has that big ugly rectangle thing?

Exactly! I have the stock LS3 resonators and mine sounds perfect.. enough note to hear it but the drone is not an issue.. You would benefit from swapping everything including headers, cats & eliminate the resonators if you really want exhaust note..

GSoccerCam · 10-22-2016, 07:45 PM

My last one had 1 7/8 kooks long tube and off road pipes with no res and flow master 10 series .. lol was ridiculously loud... but when I got under the car and seen no big ol resonator I figured the guy before me swapped it for some smaller resonators.... but that's good to know.. I had no clue that was stock resonator for an ls3... I'm currently lookingg for some high flows right now for the money. They do a good ammount of a difference right ?

sdynak · 10-22-2016, 07:50 PM

Mine had a muffler swap on it when I got it and it already was loud with that alone I felt.. When I put on the headers and cats you could defiantly hear the difference but it was not obnoxious leaving LS3 resonators in.. I actually love the note and would not want to change it.. I would say the cats & headers will make the flow better and add to the note a little.. Nothing earth shattering.. But better overall in the HP/TQ was what I was after.. Either way it is something to consider between all benefits.. Lots of options to choose from.

GSoccerCam · 10-22-2016, 08:04 PM

Yeah for sure.. with longtube headers I had to get it tuned. Same goes with an ls3 right?

sdynak · 10-22-2016, 08:07 PM

Yes.. you will want to do that and include a rear O2 eliminate also with high flow cats (if you even need them for TN?) .. For bolt ons Dyno Steve RDP is awesome if you buy the tuner from him he includes the tune and updates at no additional charge.. He even rechecked mine for me after data logging some runs to ensure the AF ratios were on..

10-22-2016, 06:03 PM	#1
GSoccerCam Drives: 2010 LS3 Join Date: Jan 2014 Location: Nashville TN Posts: 176 View My Garage	What's done to my exhaust?? Sooo I know the stock resonator Is replaced with maybe smaller resonators? I have stock cats and a borla axle back atak.. even with my mufflers off the car was quieter then I think it should have been.... but I might have an hpipe? Not sure why my car is reallly really quiet.. any helps or ideas on why its so quiet is appreciated .. Attached Images __________________ 2010 LS3 FORGED BOTTOM END. BUILT TOP END WITH BTR COMPONENTS AND A GPI CAM

10-22-2016, 06:51 PM	#2
sdynak Drives: 2010 1SS Join Date: Aug 2015 Location: Bayville, NJ Posts: 936	Hi flow cats & long tube headers should give you more note.. Those look like LS3 resonators? Or are they some aftermarket? __________________ 2010 1SS LS3, Black, 235/250, .621/.615, 114 + 4, Kooks Stepped Headers, 3.91's, Bo White PTB, Flowmaster Mufflers, Cold Air Industries CAI, Apex Scoop & Windshield Washer Relocate, SLP Wheels, Skip Shift Eliminate, Barton Flat Stick, OEM HID/Halos, Dyno Tuned by ECS

10-22-2016, 06:56 PM	#3
LaN- Drives: 2014 SS Convertible Join Date: Jun 2015 Location: Michigan Posts: 175	the H pipe is factory. Get rid of those resonators. __________________ Engine: LSA Conversion, Ported Heads, 1 7/8 headers, VMS 2.5 Cam, Roto Fab intake, ADM Scoop. BMR engine mounts, 3.91 628/525 Suspension: Koni orange, (BMR everything) 1" drop springs, toe rods, trailer arms, non adjustable LCR, FE4 sway bars, sub frame connectors, delrin sub frame bushing and upper control arm bushings. Front bushings.

10-22-2016, 07:31 PM	#4
GSoccerCam Drives: 2010 LS3 Join Date: Jan 2014 Location: Nashville TN Posts: 176 View My Garage	oh boy forgot i had my old car in my info .. yes this is a 2010 ls3 sorry about that. so wait. those are the stock resonators for an ls3? but an l99 has that big ugly rectangle thing? __________________ 2010 LS3 FORGED BOTTOM END. BUILT TOP END WITH BTR COMPONENTS AND A GPI CAM

10-22-2016, 07:45 PM	#6
GSoccerCam Drives: 2010 LS3 Join Date: Jan 2014 Location: Nashville TN Posts: 176 View My Garage	My last one had 1 7/8 kooks long tube and off road pipes with no res and flow master 10 series .. lol was ridiculously loud... but when I got under the car and seen no big ol resonator I figured the guy before me swapped it for some smaller resonators.... but that's good to know.. I had no clue that was stock resonator for an ls3... I'm currently lookingg for some high flows right now for the money. They do a good ammount of a difference right ? __________________ 2010 LS3 FORGED BOTTOM END. BUILT TOP END WITH BTR COMPONENTS AND A GPI CAM

10-22-2016, 07:50 PM	#7
sdynak Drives: 2010 1SS Join Date: Aug 2015 Location: Bayville, NJ Posts: 936	Mine had a muffler swap on it when I got it and it already was loud with that alone I felt.. When I put on the headers and cats you could defiantly hear the difference but it was not obnoxious leaving LS3 resonators in.. I actually love the note and would not want to change it.. I would say the cats & headers will make the flow better and add to the note a little.. Nothing earth shattering.. But better overall in the HP/TQ was what I was after.. Either way it is something to consider between all benefits.. Lots of options to choose from. __________________ 2010 1SS LS3, Black, 235/250, .621/.615, 114 + 4, Kooks Stepped Headers, 3.91's, Bo White PTB, Flowmaster Mufflers, Cold Air Industries CAI, Apex Scoop & Windshield Washer Relocate, SLP Wheels, Skip Shift Eliminate, Barton Flat Stick, OEM HID/Halos, Dyno Tuned by ECS

10-22-2016, 08:04 PM	#8
GSoccerCam Drives: 2010 LS3 Join Date: Jan 2014 Location: Nashville TN Posts: 176 View My Garage	Yeah for sure.. with longtube headers I had to get it tuned. Same goes with an ls3 right? __________________ 2010 LS3 FORGED BOTTOM END. BUILT TOP END WITH BTR COMPONENTS AND A GPI CAM

10-22-2016, 08:07 PM	#9
sdynak Drives: 2010 1SS Join Date: Aug 2015 Location: Bayville, NJ Posts: 936	Yes.. you will want to do that and include a rear O2 eliminate also with high flow cats (if you even need them for TN?) .. For bolt ons Dyno Steve RDP is awesome if you buy the tuner from him he includes the tune and updates at no additional charge.. He even rechecked mine for me after data logging some runs to ensure the AF ratios were on.. __________________ 2010 1SS LS3, Black, 235/250, .621/.615, 114 + 4, Kooks Stepped Headers, 3.91's, Bo White PTB, Flowmaster Mufflers, Cold Air Industries CAI, Apex Scoop & Windshield Washer Relocate, SLP Wheels, Skip Shift Eliminate, Barton Flat Stick, OEM HID/Halos, Dyno Tuned by ECS