Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - I'd like to add sound deadening material to my car. How adversely will it affect MPG?

GearHead · 08-13-2016, 09:43 PM

I can't say if it improved the acoustics in the car because my car still isn't completely put back together.

I don't have speakers or door panels in the car right now.

I have to make this decision within the next week if I want to remove some of the material. The rest of the dash is going back in.

Something is just bothering me about having too much sound deadening coverage on the floor.. Only 25% should have been covered, but the installer put down 100% coverage. It's been on my mind for a while now.

I'm trying to get the best MPG out of my car. I just can't see 40 MPG city mixed with highway is the best I can get...

08-13-2016, 09:43 PM	#40 (permalink)
GearHead EcoModding Lurker Join Date: Apr 2015 Location: Earth Posts: 45 Thanks: 1 Thanked 1 Time in 1 Post	I can't say if it improved the acoustics in the car because my car still isn't completely put back together. I don't have speakers or door panels in the car right now. I have to make this decision within the next week if I want to remove some of the material. The rest of the dash is going back in. Something is just bothering me about having too much sound deadening coverage on the floor.. Only 25% should have been covered, but the installer put down 100% coverage. It's been on my mind for a while now. I'm trying to get the best MPG out of my car. I just can't see 40 MPG city mixed with highway is the best I can get... Last edited by GearHead; 08-13-2016 at 10:01 PM..