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GM Borla Arrives Today - Cold Feet


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Well, you will definitely not get an invitation to the "Cheap-@$$ Modders".

Well, yeah. Thank goodness for liberal return policies and Craigslist or I would be broke

 

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I have the GM-Borla exhaust, I have the old one and it rattles even on the GM-Borla & Stock exhaust, Borla may be sending me a new update flapper, swap "I"- pipe send the old back.

Outside of the flapper valve, the GM-Borla exhaust is very quiet I tow so I enjoy extremely low noise and zero drone, btw I fully sound deaden my truck its ultra-quiet with the windows are up.

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I have the GM-Borla exhaust, I have the old one and it rattles even on the GM-Borla & Stock exhaust, Borla may be sending me a new update flapper, swap "I"- pipe send the old back.

Outside of the flapper valve, the GM-Borla exhaust is very quiet I tow so I enjoy extremely low noise and zero drone, btw I fully sound deaden my truck its ultra-quiet with the windows are up.

You are the second to mention the sound deadening. Did you do dynomat under the carpet, or more than that?

 

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You are the second to mention the sound deadening. Did you do dynomat under the carpet, or more than that?

 

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Entire truck, except dash! This should answer your questions

 

When I say my truck is uber quiet I mean it! Not saying its the quietest on the planet but its quietest I have ever rode in.

 

IMO sound deadening importance on location based on doing this to 3 of my vehicles.

 

1. Roof (single largest piece of sheet metal CCSB, so much sound travels through the thin sheet metal, If I had to pick only 1 that makes the biggest difference its the roof, its also PITA)

​2. Doors (not as much deadening as you think) however GM's glass is thicker and door seals are fantastic, but he doors need some help.

​3. Bottom (lots of noise and heat, duh)

​4. Rear & pillars (had to take this apart to get to the floor, might as well do it right)

​5. Front fender wells (sound gets in from the air gap between the body and fender to the door) see 2nd post below there is a piece of blueish carpet cotton for deadening.

 

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that's CC foam on top of the CLD, btw the CLD is 100mil, some bad azz stuff to work with, almost no mess and zero smell even here in TX summers.

 

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^ stock deadener... eek I don't have pics but all doors have about 80-90% coverage (I don't recommend taking the factory stuff you can kink your outer metal)

 

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I was a tech, serviceability is key... do you seen any SD CLD from this view? the entire door inner and outer skin is done.

 

even the door panels have some CLD and foam, all the plastic pockets are coated to reduce noise and rattles, sorry no pics

 

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^ here you get an idea of how thick this stuff, awesome stuff. Great CLD for the volume and value, easy to work with on the smaller sheets too.

 

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not the best shots... but I was exhausted by this point so that's all you get, I made templates the inside skin has the CLD as well as the door skin, like I said I don't have any pics I thought I took some.

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Almost forgot, did the front fender wells too! reduced rain/water noise from the tires slinging water into the fenders.

 

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Damn this is what I wanted to do! It was a lot more daunting than I imagined and I ended up only doing the back wall and rear floor. If your ever in the mood to do it again..... let me know.

 

You weren't concerned with trapping moisture between the mat and the body?

 

 

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Damn this is what I wanted to do! It was a lot more daunting than I imagined and I ended up only doing the back wall and rear floor. If your ever in the mood to do it again..... let me know.

 

You weren't concerned with trapping moisture between the mat and the body?

 

 

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Nope I didn't go down the channel where the windshield runs off down to the rocker panel. Rocker can drain just fine, as well as the engine bay.

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so any more killer deals on the GM Borla exhaust???

Nope. Mine was a one time thing. Customer ordered and never picked it up, then it sat in the warehouse for a few years collecting dust. The stainless steel doesn't care about that though.

 

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Nope I didn't go down the channel where the windshield runs off down to the rocker panel. Rocker can drain just fine, as well as the engine bay.

I am in the rust belt, so not sure how I'd feel about doing the wheel wells with the road salt. But it would certainly think it would help with the noise from my duratrac tires

 

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Damn this is what I wanted to do! It was a lot more daunting than I imagined and I ended up only doing the back wall and rear floor. If your ever in the mood to do it again..... let me know.

 

You weren't concerned with trapping moisture between the mat and the body?

 

 

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Diy sound deadoning for the most part is a huge waste of time and money.

 

You can't half ass it, you have to know what you are doing.

 

I completely stripped the interior of a sports car and installed sound deadoning. It was a pain getting the interior to fit right after, it made almost no difference in sound, and added like 50-75lb to the weight of the car. Never again.

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