[coolbreeze]

After having my Blastin Bob's resonators installed I did notice a bit of drone at certain rpms. Most of the time it isn't bothersome, but once in a while it is. So I called Blastin Bob's and Bob himself told me he put the same ones on his '14 R/T and told me that most of the 'drone' is coming through the trunk floor. What he did was install some of that insulation that is used to insulate a hot water heater, under the trunk carpeting and it did help a little.
So that being said, has anyone else done anything to quiet the drone effect?

 

[bad8nti]

Dave, I have some drone with mine after doing the resonator delete(local muffler shop straight pipe) at between 1800 and 2100, but it's easily controlled by shifting out of it. I think I may try Dynomatting the trunk area if I get tired of it.

 

[MommaBetty]

Just noticed Dan, the dogs look great for Christmas!!!!!

 

[TexasRT]

After having my Blastin Bob's resonators installed I did notice a bit of drone at certain rpms. Most of the time it isn't bothersome, but once in a while it is. So I called Blastin Bob's and Bob himself told me he put the same ones on his '14 R/T and told me that most of the 'drone' is coming through the trunk floor. What he did was install some of that insulation that is used to insulate a hot water heater, under the trunk carpeting and it did help a little.
So that being said, has anyone else done anything to quiet the drone effect?

I expect that will help. I say that because I had my back seats down ...so the cab was open to the trunk... it is a night/day difference in sound. My Corsa Xtreme catback has drone in that situation... and does not when the seats are back into normal position.

 

[bad8nti]

Just noticed Dan, the dogs look great for Christmas!!!!!

Thanks, Betty! We started decorating at the house, so I thought I would decorate here.

 

[coolbreeze]

Dave, I have some drone with mine after doing the resonator delete(local muffler shop straight pipe) at between 1800 and 2100, but it's easily controlled by shifting out of it. I think I may try Dynomatting the trunk area if I get tired of it.

Dan, have you ever used that dynamat before? I looked it up and it seems like it might be pretty good stuff. The one I saw on line was called "extreme dynamat"

 

[HDCowboy]

A lot of folks, myself included have used Reflectix insulation from Lowes (lot cheaper than dnynomax stuff) to line their trunk and it has significantly reduced the drone they were having........

http://www.lowes.com/pd_13358-56291-BP48025_0__?productId=3011906

Do a search for at thread titled Reducing the Effects of Drone on the other forum or on google.

 

[hemithis]

the dynamat will def help, these trunks have like no sound deadning in them what so ever im sure any little bit you put in there will help for sure .. im going to do mine spring time .

also if you have a local body shop supply place near you they sell the same stuff as dynamat we use it to replace the stock small square pieces the factory uses when we do new door skins and q panels

 

[coolbreeze]

the dynamat will def help, these trunks have like no sound deadning in them what so ever im sure any little bit you put in there will help for sure .. im going to do mine spring time .

also if you have a local body shop supply place near you they sell the same stuff as dynamat we use it to replace the stock small square pieces the factory uses when we do new door skins and q panels

Yeah I'm definitely going to get some in the spring and do it. That's number 1 on my list for this coming year.

 

[redwings19]

[URL=http://s889.photobucket.com/user/redwngs19/media/20150428_141748_zpssxv8jto2.jpeg.html][/URL]
[URL=http://s889.photobucket.com/user/redwngs19/media/20150428_143436_zpsrmbi15ew.jpeg.html][/URL]

So I took the advice of those here to put the Reflectix insulation down. Started with a layer under the jack and tire and then put another layer over the tire and on the back section. It looks like a big wrapped baked potato, but if it helps with the drone even a little then I'm all for it.

 

[Home Theater Guy]

That is so funny, I have a complete roll of that in my attic just sitting there for projects. I think it may be painful, but it would be the best to glue it to metallic surfaces to quiet the drone. That is basically how dynomat works. Its built the way roofing tiles are with a reflective element one side and dense tar/rubber that is sticky on the other.

 

[Home Theater Guy]

Today, I installed the Lowes (Reflectix R21 48-in x 25-ft Unfaced Reflective Roll Insulation) glued down with GE (
GE 10.1-oz Black Silicone Window and Door Caulk). Just as "Redwings19" had installed in April. So far, the results have been positive and using this application does reduce the drone effect.

What did I learn?

1. The Reflectix product is not nearly as thick as Dynamat (http://www.dynamat.com/automotive-and-transportation/automotive-restoration/dynamat-xtreme/) when considering its bond.
A. Dynamat has a rubber or tar compound on the back of it that is about 3/4 of an inch. That is the secret in the sauce in my opinion.
2. Because the Reflectix is lighter, I suggest you apply 5-7 tubes of the GE Black Silicone. I only used 1.5 tubes and will need to reapply in some areas for better sound deadening.
3. When applying the black silicone;
A. Use a putty knife and apply to floor on the larger pieces and to the back of the Reflectix on the smaller ones.
B. Make the letter "S" continually when applying to get an even amount.
C. Do not apply near or under the battery, fuse box or wiring.
D. If you are completely set in applying around the wiring, use Wire Loom (http://www.cableorganizer.com/wire-loom/) before applying.
E. Never use a straight edge around wires.

What else can be done?
1. When installing the product, I decided not to pull the felt covering off of the wheel wells and decided to shove some strips of the Reflectix in there. After I drive it around for a week, I believe this will be my next step.

2. I am considering the exhaust weight solution as well.

 

[coolbreeze]

Just ordered "fatmat" insulation kit $62.99. Read a bunch of reviews and all were favorable, so we'll see. It's supposed to be a little thicker than dynomat and is also self adhesive. Comes in a roll.

After reading a while back that quad tips seem to eliminate a little of the drone, I decided to put those on as well. I did notice a difference...don't really understand why, but what the hey, they look cool anyway !
But I'm anxious to see what happens after the insulation is insalled.

 

[RunningWithBeers]

Just ordered "fatmat" insulation kit $62.99. Read a bunch of reviews and all were favorable, so we'll see. It's supposed to be a little thicker than dynomat and is also self adhesive. Comes in a roll.

I'm looking forward to seeing what the fatmat does for you. I'm swapping the stock mufflers out for Magnaflow 11266 4x9 mufflers and I'll probably add something to the trunk to help there as well.

Take it easy
Jay

 

[djb0308]

I also did the relectomat. Made a big difference in sound in my car

 

[coolbreeze]

I'm looking forward to seeing what the fatmat does for you. I'm swapping the stock mufflers out for Magnaflow 11266 4x9 mufflers and I'll probably add something to the trunk to help there as well.

Take it easy
Jay

Hey Jay, yeah, I may install the fatmat tomorrow if I have time. It's supposed to be 80 degrees tomorrow which would be ideal. If I do , I'll take it for a quick ride and then will let you know.

 

[RunningWithBeers]

Hopefully your install goes well when you do it. I'm going to start with the mufflers but I'm also looking at BXT II RAAMmat as a budget alternative to Dynamax. If the Fatmat works well I might try that instead.

Take it easy
Jay

 

[Home Theater Guy]

Update, I recently went to my exhaust guy and picked up some 2.5" clamps to add weight to my setup and reduce the drone. So far, the result was worse. This weekend, I am going to move the clamps further down the pipe, closer to the bottle mufflers and then test the results. Right now the clamp is installed just after the junction of the OEM pipe and the BB pipe, closer to the rear of the vehicle.

 

[pugsleyadams]

Part of the reason for deleting my resonators was the drone. I love the sound......

 

[RunningWithBeers]

I ultimately decided to add Magnaflow 11266 mufflers since in town I didn't like the way the exhaust called attention to the car when wanting to slow down and or be discrete. The exhaust still has a great tone but it really cut down on drone and the noise when letting off the gass.

Take it easy
Jay