Started installing the acoustic insulation. I pulled out the base speaker & amplifier & put the butyl rubber & foam behind. Already with this area done & under the spare wheel I can see the car at the rear will be a lot quieter & I haven't even driven it. Lots of red dust behind everything!

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Working my way around the car. Even though half is done, but not the tailgate. I will need to do something at the front as the road noise environment feels out of balance. Too much noise from the front because the rear is too quiet.

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Done all the doors & the tailgate. The only bit left is the left side of the boot. Ran out of foam. But now the tailgate is done, it seems to help the front a touch by reducing the noise at that end, not by much but a better balance so to speak. The tailgate closes nicely, like all the doors. I also stuffed a bit of foam in the 3 trim pieces around the tailgate window.

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Oh wow you’ve really raced ahead
I haven’t had a chance to do anymore I’ve also run out of material, need to order some more but also been distracted by work and other ongoing projects.
I’m really noticing a difference with what little I’ve done, it’s more of a change in the feel of the vehicle, the butyl really does make a difference, vehicle feels smoother. MY15
Tyre Pressure Monitoring System (TPMS)
Surround Camera System
InControl Apps soon to be replaced with CarPlay (WIP)
Meridian Premium Surround Sound
Digital Audio Broadcast
Timed Climate
Cruise ECO Data
Follow Me Home Reverse
Extra Features Menu
Picture In Motion
4x4i screen (WIP)
Digital Broadcast TV
Meridian Rear Media with WIFI
Factory Powered Tailgate
Blind Spot Monitoring (BSM)
Reverse Cross Traffic Alert (RCTA)
Electrochromatic Wing Mirrors (WIP)

With the offcuts I've done the A pillar (drivers side), the panel for bonnet release but the drivers side (for people who drive on the correct side of the road, or in other words for people who have placed their automatic tailgate release button! ), & the black panel between this & the A pillar panel with some foam.

I removed the bonnet insulation. It looks the part but in reality it is only about 5mm thick so it is next to useless for any acoustic benefit, so I will beef this up with some engine bay insulation. Also thinking of 0.25mm aluminium/foam insulation sheet on the fire wall, for both heat & acoustic.

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😂😂 you read my mind, I was planning on doing the bonnet also because apparently a lot of noise comes through the windscreen.
I checked with the sellers of the butyl/acoustic liner were using and they said you can use it in the engine bay
I’m planning on putting it in between the reinforcement beams of the bonnet and then replacing the factory bonnet liner so you’ll never know it’s there. MY15
Tyre Pressure Monitoring System (TPMS)
Surround Camera System
InControl Apps soon to be replaced with CarPlay (WIP)
Meridian Premium Surround Sound
Digital Audio Broadcast
Timed Climate
Cruise ECO Data
Follow Me Home Reverse
Extra Features Menu
Picture In Motion
4x4i screen (WIP)
Digital Broadcast TV
Meridian Rear Media with WIFI
Factory Powered Tailgate
Blind Spot Monitoring (BSM)
Reverse Cross Traffic Alert (RCTA)
Electrochromatic Wing Mirrors (WIP)

Nice work

Mark 2009 FL2 TD4 SE (Sadly gone)
2007 FL2 TD4 GS (The wifes , gone after 8 great years)
2012 FL2 SD4 SPORT LE(Gone and missing it)
2015 DISCOVERY SPORT 2.2SD4 HSE (Now gone)
2014 Ford Bmax 1.0 ecoboost ( Gone but what next )
2014 Ford Focus 2.0tdci Zetec S (Gone,but what a car)
2020 Ford Fiesta ActiveX 1.0 Ecoboost
2024 Skoda Kodiaq 1.5 Tsi SEL

I have stuck on the butyl first, then engine bay acoustic mat, then more mat covering the bonnet, then more discs/offcuts on the mat. Once the original panel goes back on you wouldn't know there is anything extra underneath.

I threaded a longer piece of acoustic mat through the square holes at the front of the bonnet & pulled back the backing film with an attached line (doubled up masking tape)

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Are you keeping track of how much weight you are adding?

I haven't actually added that much weight as the weight is in the butyl & have only used 1 box less offcuts. The other items are all light.

I wasn't going to do the ceiling but had a bit of a poke around & it really wasn't that difficult. I only put acoustic foam in the ceiling & thin pieces of poly batts for a bit more thermal insulation! I didn't think it was worthwhile putting the butyl up there.

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Wow
Now that your done can you finish mine off now  MY15
Tyre Pressure Monitoring System (TPMS)
Surround Camera System
InControl Apps soon to be replaced with CarPlay (WIP)
Meridian Premium Surround Sound
Digital Audio Broadcast
Timed Climate
Cruise ECO Data
Follow Me Home Reverse
Extra Features Menu
Picture In Motion
4x4i screen (WIP)
Digital Broadcast TV
Meridian Rear Media with WIFI
Factory Powered Tailgate
Blind Spot Monitoring (BSM)
Reverse Cross Traffic Alert (RCTA)
Electrochromatic Wing Mirrors (WIP)

I took the car around our extensive network of local goat tracks, really happy with the result. You are not going to turn the car into a Bentley, but you get a really nice mellow sound. Overall the car is a reasonable amount quieter. But the real benefit is any harshness is gone. There is a depth to the tone to the car that makes it an even nicer place to be than it was before.

If one feels the urgent need to burn money on a car, I recommend do acoustic insulation first. You don't get bling! But you do get piece & quite that has far more value for quality of life than any accessories you stick on a car.

Overall it was not difficult to do, just take you time & work from the rear to the front.

Materials:
1.8 m2 butyl, (not needed on ceiling) you do not need to cover everything.
7.2 m2 acoustic foam (a few little more places I might do. B pillars have none or the door sills, so will get another 1.8 m2, but it can wait awhile, but really it is not needed)
1.5 m2 bonnet lining, the expensive stuff, not the foam.
600 x 1060 0.25mm/3mm aluminium/fibreglass stick on sheet.
Offcut of poly batt for ceiling, passenger area only.
Offcut of acoustic thick pyramid foam stuffed in above rear shocks.
A bit of aluminium tape to cover one sharp edge of aluminium I put around battery box.
Roller.
Trim panel removal tools.

About 5 days of actual work at a relatively leisurely pace, but don't rush it as it is petty tiring work. Procrastination, mankind's greatest labour saving device!

Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18

Battery cover templates:

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Over the new year I drove to Kosciuszko NP. The roads south of Sydney are concrete & they create a very irritating sound. Two months later back on the same road but further this time, the car is a lot quieter. There is no getting away from the sound but it has been reduced reasonably. It is the high frequency sound that has been cut back the most.

I bought a 1.3m2 piece of mass loaded vinyl without foam backing & used the front floor mats as templates but ran the vinyl a bit higher pass the steering column & also into the bottom of the fuse box.

I bought another sheet of the expensive bonnet lining & added another layer down about 350mm on the fire wall. Also stuck some on the inside of the fuse box but left a gap so one can still read the fuse locations. Plus stuck a few bits here & there. When I get time I will figure out where to add more.

Ceiling: for those without skylights! It is worth adding a layer of foam to the ceiling. Also shove in some polybatt insulation, it has cut back heat entering the car from above. If you have a dark coloured car it would be even more worthwhile.

I have stuck a bit of foam around the light console on the ceiling but not on the ceiling in the area above where the sun visors fold home. I will have another look at this area to see if I can get anything in that area. I think it is worth the effort if there is room, firstly to reduce heat as this area is a lot warmer than the ceiling behind. Also the car needs acoustic insulation in the front wherever you can put it to balance the car's sound. If the rear is too quiet the front will sound louder.

At some stage I will also put something behind the plastic where the tweeters are & if possible even around the plastic door frame trim cover. I might even add a bit of butyl to the front doors' metal when I remove the door lining.

Still have to do the B column & door sills. Also bought a sheet of 6mm foam so I can stick it where the thick acoustic foam will not fit. Procrastination, mankind's greatest labour saving device!

Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18

Have pulled the car apart again to finish off the acoustic insulation over the boot area. Also chucked in some thin polyester batts in the rear ceiling, so the whole ceiling is now done. Also threaded the acoustic foam into the stiffening cross bars, using a piece of backing paper twice as long, doubled back, then pulling the end of the paper when the foam was in place. A bit tricky but the foam is in a reasonable position & the hollow beams filled fairly well.

Over the driver & front passenger I have stuck acoustic foam on the back side of ceiling lining panel. Also tried to fill gaps and hollows around the front & pushed the acoustic foam into the structural section where the windscreen meats the roof, above the sun visors. I have noticed on hot days that the sun visor area was a fair bit warmer than the main ceiling due to lack of insulation. So this should be better now, about as much as one can do within reason.

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