another Drone question - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

kmarshall2121 · 11-14-2017, 01:18 PM

Have a 2012 45th, had Flow Masters from a V8 installed at approx. 1500 miles. looking at doing a few road trips, and wife isnt real pleased with the drone inside the car. without changing the mufflers, what would be the best way to eliminate most if not all the drone? I was thinking an H pipe? Heard of others running different configurations of curved tubes before the mufflers. Still want (and love) the sound it puts outside the car, but really need to quiet it up inside... thoughts?

KillboyPowerhead · 11-14-2017, 04:02 PM

I suspect a replacing the factory h-pipe with a "resonated x-pipe" (x-pipe in the form of a muffler) would help with drone, but I know for sure the j-pipes (those curved pipes before the mufflers) do kill drone almost completely without affecting sound much if at all.

kmarshall2121 · 11-14-2017, 04:25 PM

Quote:

Originally Posted by KillboyPowerhead

I suspect a replacing the factory h-pipe with a "resonated x-pipe" (x-pipe in the form of a muffler) would help with drone, but I know for sure the j-pipes (those curved pipes before the mufflers) do kill drone almost completely without affecting sound much if at all.

I dont have a factory resonated x pipe. both are independent of each other. right and left - kind of like the Twix commercials...

KillboyPowerhead · 11-14-2017, 06:47 PM

Say whaaa? What exactly have you done to the exhaust? The factory exhaust includes an h-pipe which can be replaced by said aftermarket resonated x-pipe. The h-pipe is in around the middle of the car, and then from there we have resonators and then mufflers. Since you have mufflers already (Flowmasters) I'd lean towards the j-pipes as adding another muffler will quiet the sound more, unless volume isn't a big deal for you.

kmarshall2121 · 11-15-2017, 09:28 AM

Quote:

Originally Posted by KillboyPowerhead

Say whaaa? What exactly have you done to the exhaust? The factory exhaust includes an h-pipe which can be replaced by said aftermarket resonated x-pipe. The h-pipe is in around the middle of the car, and then from there we have resonators and then mufflers. Since you have mufflers already (Flowmasters) I'd lean towards the j-pipes as adding another muffler will quiet the sound more, unless volume isn't a big deal for you.

All i have had done is replace the suitcase stock mufflers with Flow Masters behind the axle. They are definitely independent pipes from the block back. Do not connect or join anywhere

qcman · 11-16-2017, 09:41 AM

I'm hot sure about the V6 but I know my V8 has a factory H pipe in the middle and its pretty huge. I assume the V6 has something similar so I would think to get any change there it would need to an X Pipe otherwise it would be H for H which likely wouldn't do much.

Just a muffler delete should not cause Drone ( a secondary resonance). I suspect it could be the sound she doesn't like but it may not be actual drone? I have a delete and the car sounds better at some RPM's than others but I wouldn't call it Drone.

But if its drone I agree a J pipe would be the best solution. But if there is no central resonator at all an H pipe would help no doubt.

PyroLT · 11-16-2017, 10:28 AM

Below is a picture from solo comparing the stock exhaust to one of their cat backs. If all you have done is put on a axle back then you should still have the h-pipe joining the two sides in the middle. (by the "78lbs" comment)

Should you replace the h-pipe with a res-X, the system would look similar to the solo system with the larger muffler towards the front.
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If you have drone I would HIGHLY recommend the j pipes(circled in red). Solo puts them on most of their systems but you can also order just the pipes if you call/email.

I have them on mine and before doing it the drone would drive you insane. Now its basically gone.

DSX_Camaro · 11-16-2017, 12:42 PM

I think a picture of the underside of your car would be best, and by extension any kind of crossover would probably help the sound... I would guess with no crossover it is horribly raspy.

Either way. You'd want to have the Magnaflow 11386 welded in after the exhaust curves in towards itself after the catback connection to the catalytic downpipes. Same place where that center muffler is in the post before this one. If you truly don't have a factory H then someone else has already modified that exact position.

kmarshall2121 · 11-16-2017, 03:20 PM

Quote:

Originally Posted by DSX_Camaro

I think a picture of the underside of your car would be best, and by extension any kind of crossover would probably help the sound... I would guess with no crossover it is horribly raspy.

Either way. You'd want to have the Magnaflow 11386 welded in after the exhaust curves in towards itself after the catback connection to the catalytic downpipes. Same place where that center muffler is in the post before this one. If you truly don't have a factory H then someone else has already modified that exact position.

Drove it off the showroom floor with 12 miles on it. I have been the only owner, and I know when i had it in the air replacing the 2 factory mufflers behind the axle that the pipes are not connected in any way from the block back.

KillboyPowerhead · 11-16-2017, 04:00 PM

Please take a picture of the whole exhaust at your next opportunity

kmarshall2121 · 11-19-2017, 11:38 PM

Quote:

Originally Posted by KillboyPowerhead

Please take a picture of the whole exhaust at your next opportunity

so, took a video of the pipes from back to front, separate from the axle back all the way past the two resonators, them BAM, hidden just past the block, found the cross pipe connecting the two. swore it wasnt there, but is pretty hidden. Guess ill take ketchup and mustard on my crow...

rontammy0 · 11-19-2017, 11:54 PM

Flowmasters do drone. If you like the sound then add the j pipes. If you want to change it then get yourself some different mufflers.

frankwjr · 11-20-2017, 08:35 AM

I too gotta add j-pipes, cold weather with the windows up has amplified it(when its hot and the windows are down and the music is loud..what drone?) Lookin to piece a kit together myself using some mandrel bent tubing off of ebay and add them to my Doug T. axle backs. Good luck!

Kessler · 11-20-2017, 10:59 AM

There was a thread, when I bought my Camaro, Discussing adding Helmoltz filter to the exhaust.

http://www.camaro5.com/forums/showthread.php?t=182467

11-14-2017, 01:18 PM	#1
kmarshall2121 Drives: 2012 45th Anniversary Edition Join Date: Aug 2012 Location: San Diego, CA Posts: 1,618 View My Garage	another Drone question Have a 2012 45th, had Flow Masters from a V8 installed at approx. 1500 miles. looking at doing a few road trips, and wife isnt real pleased with the drone inside the car. without changing the mufflers, what would be the best way to eliminate most if not all the drone? I was thinking an H pipe? Heard of others running different configurations of curved tubes before the mufflers. Still want (and love) the sound it puts outside the car, but really need to quiet it up inside... thoughts?

11-14-2017, 04:02 PM	#2
KillboyPowerhead Drives: 2015 Z/22 Join Date: Aug 2015 Location: Ontario, Canada Posts: 931	I suspect a replacing the factory h-pipe with a "resonated x-pipe" (x-pipe in the form of a muffler) would help with drone, but I know for sure the j-pipes (those curved pipes before the mufflers) do kill drone almost completely without affecting sound much if at all. __________________ Overkill/Self Tuned; Mace Camshafts; K&N Typhoon Cold Air Intake; Ported 80mm Throttle Body/Intake Manifolds/Manifold Spacer; Solo Performance High-Flow Cats, Cat-back Exhaust; Vitesse Motorsports Throttle Controller; Elite Engineering E2 Catch Can; BC Racing BR Coilovers; JPSS Delrin Radius Rod Bushing Inserts, Sway Bars; Pegasus Aluminum Rear Cradle Bushings, Camber/Caster Plates; Z/28 Toe Links, Trailing Arms, Upper Control Arm Bushings, Rear Shock Mounts

11-14-2017, 06:47 PM	#4
KillboyPowerhead Drives: 2015 Z/22 Join Date: Aug 2015 Location: Ontario, Canada Posts: 931	Say whaaa? What exactly have you done to the exhaust? The factory exhaust includes an h-pipe which can be replaced by said aftermarket resonated x-pipe. The h-pipe is in around the middle of the car, and then from there we have resonators and then mufflers. Since you have mufflers already (Flowmasters) I'd lean towards the j-pipes as adding another muffler will quiet the sound more, unless volume isn't a big deal for you. __________________ Overkill/Self Tuned; Mace Camshafts; K&N Typhoon Cold Air Intake; Ported 80mm Throttle Body/Intake Manifolds/Manifold Spacer; Solo Performance High-Flow Cats, Cat-back Exhaust; Vitesse Motorsports Throttle Controller; Elite Engineering E2 Catch Can; BC Racing BR Coilovers; JPSS Delrin Radius Rod Bushing Inserts, Sway Bars; Pegasus Aluminum Rear Cradle Bushings, Camber/Caster Plates; Z/28 Toe Links, Trailing Arms, Upper Control Arm Bushings, Rear Shock Mounts

11-16-2017, 10:28 AM	#7
PyroLT Drives: 2015 AGM 1LT Join Date: Jul 2015 Location: Lakeland, Florida Posts: 198	Below is a picture from solo comparing the stock exhaust to one of their cat backs. If all you have done is put on a axle back then you should still have the h-pipe joining the two sides in the middle. (by the "78lbs" comment) Should you replace the h-pipe with a res-X, the system would look similar to the solo system with the larger muffler towards the front. If you have drone I would HIGHLY recommend the j pipes(circled in red). Solo puts them on most of their systems but you can also order just the pipes if you call/email. I have them on mine and before doing it the drone would drive you insane. Now its basically gone. __________________ Performance: Overkill Supercharger, VMAX ported throttle body, JacFab Intake and Spacer, VTC Throttle Controller, ARH Catless Downpipes, Magnaflow Res-X, Stock Resonator Delete, MRT V1 Axle Back, Solo J-Pipes, E85 flex fuel, MRR 228 20x10 and 20x11 wrapped in MPSS, Cosmetic: 15% Tint on side Windows 5% on back, LED fogs, SS bumper conversion, de-badged, Z28 front grill, Eagle Eye headlights, HID conversion, VIS terminator hood, Red LED sidemarkers with 5% tint.

11-16-2017, 12:42 PM	#8
DSX_Camaro Drives: 2013 SW 2LT/RS LFX/AY6 Join Date: Feb 2013 Location: Orlando, FL Posts: 1,741	I think a picture of the underside of your car would be best, and by extension any kind of crossover would probably help the sound... I would guess with no crossover it is horribly raspy. Either way. You'd want to have the Magnaflow 11386 welded in after the exhaust curves in towards itself after the catback connection to the catalytic downpipes. Same place where that center muffler is in the post before this one. If you truly don't have a factory H then someone else has already modified that exact position. __________________ K&N CAI, 1LE Strut Tower Brace, Elite Engineering Catch Can and Clean Side Separator, Apex Scoop w/ Washer Relocation Kit, CTS Front Calipers and Rotors, JacFab Ported Intake Manifold, JacFab Intake Manifold Spacer, 80mm Overkill Throttle Body, SS Brake Lines, Ideal Garage Master Cylinder, Monster Twin Disc Clutch, NPP Retrofit w/ Magnaflow Resonated X, ARH Catless Downpipes, JRE Built 3.45 Diff, 1LE Axles, 1LE Hubs, Overkill Tuned, BMR Anti Wheel-hop Kit Stage I, ACS TL1 Hood Insert, ZL1 Spoiler

11-16-2017, 09:41 AM	#6
qcman Drives: 2013 Camaro 2SS RDP Tuned L99 Join Date: Apr 2013 Location: Ottawa, Canada eh? Posts: 1,889	I'm hot sure about the V6 but I know my V8 has a factory H pipe in the middle and its pretty huge. I assume the V6 has something similar so I would think to get any change there it would need to an X Pipe otherwise it would be H for H which likely wouldn't do much. Just a muffler delete should not cause Drone ( a secondary resonance). I suspect it could be the sound she doesn't like but it may not be actual drone? I have a delete and the car sounds better at some RPM's than others but I wouldn't call it Drone. But if its drone I agree a J pipe would be the best solution. But if there is no central resonator at all an H pipe would help no doubt.

11-16-2017, 04:00 PM	#10
KillboyPowerhead Drives: 2015 Z/22 Join Date: Aug 2015 Location: Ontario, Canada Posts: 931	Please take a picture of the whole exhaust at your next opportunity __________________ Overkill/Self Tuned; Mace Camshafts; K&N Typhoon Cold Air Intake; Ported 80mm Throttle Body/Intake Manifolds/Manifold Spacer; Solo Performance High-Flow Cats, Cat-back Exhaust; Vitesse Motorsports Throttle Controller; Elite Engineering E2 Catch Can; BC Racing BR Coilovers; JPSS Delrin Radius Rod Bushing Inserts, Sway Bars; Pegasus Aluminum Rear Cradle Bushings, Camber/Caster Plates; Z/28 Toe Links, Trailing Arms, Upper Control Arm Bushings, Rear Shock Mounts

11-19-2017, 11:54 PM	#12
rontammy0 Account Suspended Drives: 2011 2SS/ RS INFERNO ORANGE L99 Join Date: Dec 2012 Location: Alliston Ontario Canada Posts: 9,057 View My Garage	Flowmasters do drone. If you like the sound then add the j pipes. If you want to change it then get yourself some different mufflers.

11-20-2017, 08:35 AM	#13
frankwjr Drives: 2010 SS 2SS M6 Join Date: Aug 2016 Location: Smithsburg, Md. Posts: 2,445	I too gotta add j-pipes, cold weather with the windows up has amplified it(when its hot and the windows are down and the music is loud..what drone?) Lookin to piece a kit together myself using some mandrel bent tubing off of ebay and add them to my Doug T. axle backs. Good luck! __________________ 2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - *150K!* - All work by me...

11-20-2017, 10:59 AM	#14
Kessler Drives: 2012 IOM 2LT RS A6 w/ BA Join Date: Apr 2013 Location: Central Valley, Ca Posts: 123	There was a thread, when I bought my Camaro, Discussing adding Helmoltz filter to the exhaust. http://www.camaro5.com/forums/showthread.php?t=182467 __________________ ToDones - Apex Scoop & Washer Relocate - CAI cai - Elite CC - Elite Clean Side Separator - MRT v1 Axle Back customized w/ J-Pipes - Black Out Headlight/Tail Light - Black Out BowTies - Black Out 'camaro' - Black Out Brake Light Chrome Bezel - JL Audio XD400/4 - Sub Thump Sub Box 2 DVC 10"s - HIFONICS ZEUS 1000.1 Escort Redline - VIOFO Dash Cam - Continental Extreme Contact Tires Gary's Customs ZL1 Front Bumper, ZL1 Rockers, & ZL1 Spoiler - Paint matched IOM OverKill 80mm T-body - JacFab Ported Intake Manifold - JacFab Extendolator 3/4" Spacer ToDos - Tune?