L99 Resonator - Replace with X-Pipe - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

GoldBowtie · 03-19-2013, 01:50 PM

I have an auto 2010 Camaro (L99) with Kooks Headers, Hi-Flo cats and SLP Loudmouth II mufflers in rear ---- with the big stock center resonator. This combo produces the sound I like along with a little extra hp. (AFM has been tuned out).

BUT that big resonator has developed a "rattle" inside (I believe this is common for some early models). Apparently the baffle welds let go.

I plan to replace the resonator with a X-Pipe (see JEGS). Has anyone with a similar L99 setup done this?? I wonder if this will induce drone. Any input is welcome.

SPCBA · 03-19-2013, 01:57 PM

it might up the drone factor. but if you like the tone and not the drone j-pipes are what you need. kills drone at the desired frequency

GoldBowtie · 03-19-2013, 02:03 PM

Quote:

Originally Posted by SPCBA

it might up the drone factor. but if you like the tone and not the drone j-pipes are what you need. kills drone at the desired frequency

Thanks for the info, I have zero drone now and was hoping the X-Pipe didn't create significant drone. J-Pipes would be my Plan-B, if needed.

CFD · 03-19-2013, 02:07 PM

I changed my resonator for an x-pipe and the exhaust tone became a bit raspy, I then went with a resonated x-pipe and it sounds much better.

SPCBA · 03-19-2013, 02:07 PM

Quote:

Originally Posted by GoldBowtie

Thanks for the info, I have zero drone now and was hoping the X-Pipe didn't create significant drone. J-Pipes would be my Plan-B, if needed.

its what i would do and is proven to work as long as you match up the length of the j pipe correctly with the frequency.

Camaro_Custom_Painted · 03-19-2013, 06:57 PM

I have the L99, headers, no cats, stock mufflers, no AFM, no DOD. I replaced the resonator with an X-pipe and it made almost no sound difference at all and did not introduce any drone. Perhaps its the stock mufflers that prevent it. It can't be any other part of the exhaust since I replaced all of it.

GoldBowtie · 03-19-2013, 07:07 PM

Quote:

Originally Posted by Camaro_Custom_Painted

I have the L99, headers, no cats, stock mufflers, no AFM, no DOD. I replaced the resonator with an X-pipe and it made almost no sound difference at all and did not introduce any drone. Perhaps its the stock mufflers that prevent it. It can't be any other part of the exhaust since I replaced all of it.

Thanks for this input. My system will be similar - except Hi-Flow cats (which, have little volume or restriction) and Loudmouth II's. I'm looking forward to the change now, and getting rid of the annoying rattle that has ruined the sound.

bw26ss · 03-19-2013, 07:17 PM

i used a summit xpipe and couldn't be happier, but I do not have headers though

Juice2SS · 03-19-2013, 09:28 PM

I have muffler deletes and the Jegs x pipe. Drone only under half throttle. I am going to add some glasspacks behind the x and before the axles.

gafool · 03-20-2013, 12:41 AM

Quote:

Originally Posted by 11fastss

i used a summit xpipe and couldn't be happier, but I do not have headers though

same here plus i have headers

REVOLUTION1 · 03-20-2013, 06:18 AM

I have a friend that has done this exact set up from Jegs, he has never mentioned drone, I have not yet rode in it since he did it so I cant say for sure, but the owner really likes it.

03-19-2013, 01:50 PM	#1
GoldBowtie Drives: 2021 Yukon Denali, 2018 ZL1 Join Date: Feb 2009 Location: Canton, MI. (Detroit Area) Posts: 241 View My Garage	L99 Resonator - Replace with X-Pipe I have an auto 2010 Camaro (L99) with Kooks Headers, Hi-Flo cats and SLP Loudmouth II mufflers in rear ---- with the big stock center resonator. This combo produces the sound I like along with a little extra hp. (AFM has been tuned out). BUT that big resonator has developed a "rattle" inside (I believe this is common for some early models). Apparently the baffle welds let go. I plan to replace the resonator with a X-Pipe (see JEGS). Has anyone with a similar L99 setup done this?? I wonder if this will induce drone. Any input is welcome. __________________ 2018 ZL1

03-19-2013, 01:57 PM	#2
SPCBA Drives: pleather and Chiclets Join Date: Mar 2012 Location: a line somwhere Posts: 4,206 View My Garage	it might up the drone factor. but if you like the tone and not the drone j-pipes are what you need. kills drone at the desired frequency __________________ the power by www.cunningham-motorsports.com the brakes by www.RacingBrake.com

03-19-2013, 06:57 PM	#6
Camaro_Custom_Painted Choke on that causality! Drives: 2010 2SS/RS Join Date: Sep 2009 Location: Minnesota Posts: 645	I have the L99, headers, no cats, stock mufflers, no AFM, no DOD. I replaced the resonator with an X-pipe and it made almost no sound difference at all and did not introduce any drone. Perhaps its the stock mufflers that prevent it. It can't be any other part of the exhaust since I replaced all of it. __________________ Edelbrock EForce - Stainless Works Headers - BMR Sways & Arms & Toe Links & Control Arm Bushings & End Links - Rotofab CAI - Assorted Interior, Exterior, Underhood Bling - Red Jewel Stripes & Full Body Clear - Lexani LX15 Wheels - JRE Fuel Rail Upgrade - Kenne Bell BAP - Heartthrob XPipe - Elite Catch Can - Pedders Cradle & Front Arm Bushings - Hotchkis Strut Brace - MSD Wires - Carbotech Brakes - DSS 1000HP Axles & Driveshaft - Mickey Thompson Tires - Halo Harness - AutoMeter A/F, Boost, Fuel Pressure Gauges - Whats Next?

03-19-2013, 02:07 PM	#4
CFD Drives: 2SS/RS L99 BLACK Join Date: Apr 2010 Location: Franklin , MA Posts: 6,696	I changed my resonator for an x-pipe and the exhaust tone became a bit raspy, I then went with a resonated x-pipe and it sounds much better.

03-19-2013, 07:17 PM	#8
bw26ss Banned Drives: ss camaro Join Date: Jul 2012 Location: usa Posts: 876	i used a summit xpipe and couldn't be happier, but I do not have headers though

03-19-2013, 09:28 PM	#9
Juice2SS Drives: 2011 2SS Join Date: Jan 2013 Location: DFW, TX Posts: 931	I have muffler deletes and the Jegs x pipe. Drone only under half throttle. I am going to add some glasspacks behind the x and before the axles.

03-20-2013, 06:18 AM	#11
REVOLUTION1 Drives: 2010 CAMARO TURBO SS Join Date: Jul 2010 Location: WEST MICHIGAN Posts: 61	I have a friend that has done this exact set up from Jegs, he has never mentioned drone, I have not yet rode in it since he did it so I cant say for sure, but the owner really likes it.