Been taking bites at this build for a while now, thought I might share it in case it helps other stinger owners, and and see if anyone has any comments/suggestions/advice.
The car: 2019 KIA Stinger GT2.
This is my daily driver and I've already put 50K on her. The HK system is pretty good for an OEM system, but I spend so much time behind the wheel I really want to
a) reduce road noise, and
b) improve the stereo system.
The plan:
Phase 1: sound treatment
I started with the trunk, there's nearly zero OEM sound deadening material back there, and with my MBRP exhaust it's pretty drone-y back there.
CLD on all the flat sheetmetal, followed by 1/64" lead sheet covered by 3mil plastic sheeting and 2mm flooring underlayment (don't judge).
Next I attacked the wheelwell liners. I used Thermozyte (synthetic jute with a foil radiant barrier) followed by 1/16" MLV.
I also lined the inner wheelwell liners in 1/16 MLV.
Now the doors. Used Dynamat xtreme on the outer skins and 1/16 MLV behind the door card. I used 1/16 as a compromise between performance and weight. This is a sporty car after all, and I'm willing to sacrifice a few DBs to continue beating up on Chargers/Camaros/Mustangs.
Lastly the floor.
The stinger floor is so busy I had a hard time getting good coverage and as such, there wasn't really any noticeable reduction in noise. Given the chance I would not do this again.
Pic is WIP, I apparently didn't take one of the finished product.
Results:
Soundproofing is a touchy subject, and notoriously hard to measure, but I tried to get at least SOME objective evidence. Measurements taken with REW and UMIK-1.
NOTE: these recordings were taken on the same road under similar driving conditions, but they were weeks apart and other factors could surely add to error (plus 75 is a busy road and it's a ***** to get a measurement on the same strip of road with no adjacent cars).
First, the noise at idle is definitely, and noticeably, lower.
At speed however, it's harder to tell.
Subjectively I feel like road noise is less fatiguing, but not necessarily lower in volume. This is probably due to the higher frequencies being substantially lower, but under 2K there's pretty much no difference.
The door treatment completely eliminated noise from adjacent vehicles, so it's definitely worth it just for that.
(I have more pics, but apparently there's a max of 10 per post...)
The car: 2019 KIA Stinger GT2.
This is my daily driver and I've already put 50K on her. The HK system is pretty good for an OEM system, but I spend so much time behind the wheel I really want to
a) reduce road noise, and
b) improve the stereo system.
The plan:
- Sound treatment
- replace drivers
- add a real subwoofer
- fully active DSP
Phase 1: sound treatment
I started with the trunk, there's nearly zero OEM sound deadening material back there, and with my MBRP exhaust it's pretty drone-y back there.
CLD on all the flat sheetmetal, followed by 1/64" lead sheet covered by 3mil plastic sheeting and 2mm flooring underlayment (don't judge).
Next I attacked the wheelwell liners. I used Thermozyte (synthetic jute with a foil radiant barrier) followed by 1/16" MLV.
I also lined the inner wheelwell liners in 1/16 MLV.
Now the doors. Used Dynamat xtreme on the outer skins and 1/16 MLV behind the door card. I used 1/16 as a compromise between performance and weight. This is a sporty car after all, and I'm willing to sacrifice a few DBs to continue beating up on Chargers/Camaros/Mustangs.
Lastly the floor.
The stinger floor is so busy I had a hard time getting good coverage and as such, there wasn't really any noticeable reduction in noise. Given the chance I would not do this again.
Pic is WIP, I apparently didn't take one of the finished product.
Results:
Soundproofing is a touchy subject, and notoriously hard to measure, but I tried to get at least SOME objective evidence. Measurements taken with REW and UMIK-1.
NOTE: these recordings were taken on the same road under similar driving conditions, but they were weeks apart and other factors could surely add to error (plus 75 is a busy road and it's a ***** to get a measurement on the same strip of road with no adjacent cars).
First, the noise at idle is definitely, and noticeably, lower.
At speed however, it's harder to tell.
Subjectively I feel like road noise is less fatiguing, but not necessarily lower in volume. This is probably due to the higher frequencies being substantially lower, but under 2K there's pretty much no difference.
The door treatment completely eliminated noise from adjacent vehicles, so it's definitely worth it just for that.
(I have more pics, but apparently there's a max of 10 per post...)