Borla Exhaust for Kia Stinger

[Mach_Tuck]

What worked best for me was mineral wool insulation. You can get a bail of it for $25 bucks from Home Depot or Lowes.... it is fireproof to 2000 degrees and is designed to deaden sound. I started with the Norco silver, and then put a layer of closed foam on top of that. It helped a little but the mineral wool is the most effective, the cheapest, easiest to apply and can be easily be removed. If I had to do it over I would just use the mineral wool alone. A lot less time, money and effort and a lot more effective for sound deadening.

Just to be certain...mineral wool is like fiberglass insulation? isnt that super itchy and would then have potential for making its way into the cabin? Also, doesnt it attract and collect lots of dust?

Would you mind posting a pic of how you installed this?? Just stuffed it all around the open area?

No...I still have the Borla...was gonna go back to stock but the parts did not become available. Actually glad it worked out that way...once I got the excess cabin noise under control , I liked the Borla much better.

As a side note to this one...i was willing and ready to ship my stock in exchange for the Borla as you offered...just sayin I am glad you got the sound all squared away and my own Borla is still outstanding at the moment until i can hear one in person.

 

[JohnG7]

What worked best for me was mineral wool insulation. You can get a bail of it for $25 bucks from Home Depot or Lowes.... it is fireproof to 2000 degrees and is designed to deaden sound. I started with the Norco silver, and then put a layer of closed foam on top of that. It helped a little but the mineral wool is the most effective, the cheapest, easiest to apply and can be easily be removed. If I had to do it over I would just use the mineral wool alone. A lot less time, money and effort and a lot more effective for sound deadening.

Hey Sarge,
I ordered some Ultra-touch Quiet Bat insulation instead- the mineral wool does work but I hate working with it (have used a lot in the past). Thanks for all your tips. The quiet batt is a denim based (old blue jeans), but designed for sound control also and fairly lightweight too.

Just to be certain...mineral wool is like fiberglass insulation? isnt that super itchy and would then have potential for making its way into the cabin? Also, doesnt it attract and collect lots of dust?

Would you mind posting a pic of how you installed this?? Just stuffed it all around the open area?

Mach_Tuck, I'm not Sarge, but I'll answer from my experience. Yes, it is the same stuff BUT- it should be dead calm in the spare well (except while removing spare). My previous experience with mineral wool is pretty itchy, so I do avoid it (but that is a good place to use it).
In my tests, I tried various foams, towels, heavy moving blankets I had and found this foam worked great, but will replace it with Ultra-touch Quiet Batt insulation instead as soon as it arrives. The price is only $11 at Home Depot for one batt, is on order.
And, I just put the foam wherever there was a void- I took about a 4' square piece of visco foam, marked it, and laid the tire on it- cutting out for the tire. It looks like it should be there, but adds flammable material (hence was for testing, foam is generally not a great choice- but it worked, as did towels before). This is where my denim quiet batt will go as soon as it gets here.

I hate to keep butting in, but realize, there is already one piece of sound deadening material (foam) on the spare tire cover (from the factory). I used a 10mm cottonfoam sound board with foil backing to double up this also, you cannot see any of this from outside. I also packed a foam piece in center of spare. Hell, I'm retired.
I'm probably at around 20-22# of weight added, but the Borla exhaust was 17# lighter than OEM- so the weight penalty is small (thankfully most sound control materials are relatively light).
Here's what I ordered instead of the mineral wool ($11):
UltraTouch
16 in. x 48 in. Denim Insulation Multi-Purpose Roll

 

[Mach_Tuck]

Hey Sarge,
I ordered some Ultra-touch Quiet Bat insulation instead- the mineral wool does work but I hate working with it (have used a lot in the past). Thanks for all your tips. The quiet batt is a denim based (old blue jeans), but designed for sound control also and fairly lightweight too.



Mach_Tuck, I'm not Sarge, but I'll answer from my experience. Yes, it is the same stuff BUT- it should be dead calm in the spare well (except while removing spare). My previous experience with mineral wool is pretty itchy, so I do avoid it (but that is a good place to use it).
In my tests, I tried various foams, towels, heavy moving blankets I had and found this foam worked great, but will replace it with Ultra-touch Quiet Batt insulation instead as soon as it arrives. The price is only $11 at Home Depot for one batt, is on order.
And, I just put the foam wherever there was a void- I took about a 4' square piece of visco foam, marked it, and laid the tire on it- cutting out for the tire. It looks like it should be there, but adds flammable material (hence was for testing, foam is generally not a great choice- but it worked, as did towels before). This is where my denim quiet batt will go as soon as it gets here.

I hate to keep butting in, but realize, there is already one piece of sound deadening material (foam) on the spare tire cover (from the factory). I used a 10mm cottonfoam sound board with foil backing to double up this also, you cannot see any of this from outside. I also packed a foam piece in center of spare. Hell, I'm retired.
I'm probably at around 20-22# of weight added, but the Borla exhaust was 17# lighter than OEM- so the weight penalty is small (thankfully most sound control materials are relatively light).
Here's what I ordered instead of the mineral wool ($11):
UltraTouch
16 in. x 48 in. Denim Insulation Multi-Purpose Roll

Excellent, thanks. IF i need to go this route...the denim is a much more favorable option in my opinion.

 

[Kamauxx]

This reminds me of all the things women go through for beauty. Shaving, make-up, fancy hair, painful shoes, holding in farts , etc.

You Borla guys are driving high maintenance super models.

 

[Tobstertx3]

Thanks to all the guys who posted photos and recommendations on the sound dampeneing. I recently purchased a Kia Stinger that has a Borla exhaust installed. I absolutely love the sound, but when cruising at 70-75 it’s just a little noisy in the cabin IMO. I’ve ordered some material recommended in this thread and will be spending some time next weekend working on it. Thanks!!!

 

[ImportSharkMike]

Thanks to all the guys who posted photos and recommendations on the sound dampeneing. I recently purchased a Kia Stinger that has a Borla exhaust installed. I absolutely love the sound, but when cruising at 70-75 it’s just a little noisy in the cabin IMO. I’ve ordered some material recommended in this thread and will be spending some time next weekend working on it. Thanks!!!

We actually had 2 customers demand to return their Borla exhausts because of the drone. Most people can bear it but others just can't stand it. Thankfully this isn't the only option on the market anymore I guess.

But yea, you can Dynamat the entire trunk into rear seat area to remedy that. We actually did this to a local customer's car and it helped quite a bit.

 

[jdouga]

Should've gone with ark lol, nvr heard the borla in person though

 

[Tobstertx3]

Should've gone with ark lol, nvr heard the borla in person though

Reading the Ark thread, they’re already people modifying their exhausts...

 

[ImportSharkMike]

Reading the Ark thread, they’re already people modifying their exhausts...

There are people modifying Borla exhausts too. I think the other dude was just saying if you got an Ark, you wouldn’t have that droning.

 

[Never thought]

Any idea if cutouts would work on the Borla?

 

[Never thought]

There are people modifying Borla exhausts too. I think the other dude was just saying if you got an Ark, you wouldn’t have that droning.

Have you heard anything about the Jun EVC having any drone when the valves are open?

 

[CoconutRob]

Have you heard anything about the Jun EVC having any drone when the valves are open?

I hope so.

 

[Tobstertx3]

What worked best for me was mineral wool insulation. You can get a bail of it for $25 bucks from Home Depot or Lowes.... it is fireproof to 2000 degrees and is designed to deaden sound. I started with the Norco silver, and then put a layer of closed foam on top of that. It helped a little but the mineral wool is the most effective, the cheapest, easiest to apply and can be easily be removed. If I had to do it over I would just use the mineral wool alone. A lot less time, money and effort and a lot more effective for sound deadening.

Sarge, Did you just fill the spare wheel area with the mineral wool?

 

[Tobstertx3]

I do still have pics of my work from the spare tire up saved if anyone wants to see them, it's quick and easy- I do this to most of my cars anyway. There are so many good sound damping materials available. It seems like every bit I did seemed to help a little more. I think the top layer (on the tire cover) and foam fill made the last big difference I was looking for.

KIA didn't do much sound damping- they didn't need to. Now it is like I want it!!!
I will probably fill in under rear seat at some point too, just for grins.

edit- dam autocorrect

I’d be interested in seeing the photos if you still have them?

Did you go back and fill under the rear seat? I’m intertested how those seats come out.

 

[Sarge2070]

Sarge, Did you just fill the spare wheel area with the mineral wool?

I filled in around the battery and the back of the tail light area...

 

[Sarge2070]

I’d be interested in seeing the photos if you still have them?

Did you go back and fill under the rear seat? I’m intertested how those seats come out.

There are two bolts at the rear of the bench seat.

 

[JohnG7]

I’d be interested in seeing the photos if you still have them?

Did you go back and fill under the rear seat? I’m intertested how those seats come out.

I'll try to put together some pics that will show what I did to dampen my Stinger.
I have not gotten around to filling in under the seat- it's too hot (and I kinda like the level of sound at this level). But I will do this once things cool off.

I'll try to figure how to post a few pics shortly...

 

[Sean]

I wanted a louder exhaust, I have a LOUDER exhaust. The wife never really complained, she just kept making funny faces.

I always heard "you need to be careful what you wish for, you might get it". This is one of those times.

BUT, it IS LOUD, but it's a sweet loud (AND BURBLES)... The wife just kept looking funny, she will get over it eventually. I suggest listening to this exhaust (any exhaust) if possible. And the power is improved (my butt dyno), it's a different car with the exhaust and new filters. It's never to be mistaken for a Tesla with my Borla exhaust.

I originally bought some flowmaster hp2 mufflers for my stinger and the drone is awful, it vibrates the entire car. I got so tired of this so I purchased the borla system and its on backorder. Am I still going to get that interior vibration and drone with the borla system?

 

[Bear]

I originally bought some flowmaster hp2 mufflers for my stinger and the drone is awful, it vibrates the entire car. I got so tired of this so I purchased the borla system and its on backorder. Am I still going to get that interior vibration and drone with the borla system?

You’ll get drone for sure especially around 1800-2500 rpm. I don’t experience any type of vibrations though.

 

[Sean]

You’ll get drone for sure especially around 1800-2500 rpm. I don’t experience any type of vibrations though.

Is it a lot of drone or a little, on a scale of 1-10 I get about a 7-8.