Hey guys question.. i have a 1jzgte with a r154 on my sc400 car but i got a straight pipe exhaust(Hate that ****) im removing it and putting all new piping with 2 magnaflow ss muffler with a silencer... anyways my question is after that i want to dynamat the trunk,doors,floor,...goals is to reduce road noise a lot and minimal exhaust drone. and rattles. which dynamat will be better for me, what will it run me in price?

 

your better off finding a bulk roll of sound deadner(sp) however i would go with the best possible price. also idk if i would do the whole door just in case something goes bad then you have to tear it off. you might be able to do secions of the door instead.

 

I would be worried about Dynamatting the doors due to the weight factor. They are already heavy doors and to add more weight would put strain on the hinges and door panel itself when pulling to close.

 

What Kind of dynamat have you been using? The extra few pounds (I'll say 5 roughly likely even less) isn't going to killer those monster door hinges

 

If you're really worried about weight I'd use some stuff from Cascade audio, lighter and better obviously more expensive

 

I just used 1 and a half boxes (each box is 36 sq ft) of dynamat extreme and did a FD rx7. Did the WHOLE car. I'd say it added 25 pounds give or take some. you can cover the doors and have no worries.. Its more pricey then some of the others, but you know you get what you pay for.

 

A better (and cheaper) alternative is to use "Peel 'N Seal" found at Home Depot. I used 140 s.f. of it in my Camaro and it made a huge difference in road noise for 1/4 the cost of Dynamat.
Also take a look at Porter Mufflers instead of the Magnaflows, the heavy gauge shell combined with the packing inside eliminates all drone from inside the car. They also sound pretty awesome, very unique!

 

Have you had problems with the peel n seal ``melting`` in the heat? I've read that its melts and falls off your doors.. oozes onto your head liner etc

 

I had it in my Camaro for 8 years before selling it, never had an issue with it and it was a black/black car in the Florida heat. There was a funny smell for a couple of weeks after application, but no issues with it coming off. The key to it's application is using a roller to get it on, especially in corners. I also used aluminum duct tape to seal the edges, which did ooze a little during application.
There are plenty of nay-sayers but I have never experienced an problem with it.

 

seems to do that trick for me... I'll be buying it for my floors and trunk you didn't have headliner and doors done in it did you?

 

It was a t-top car so I only had a small amount to cover and I don't have any pics. I used the plastic trim clips (the ones that push in, look like xmas trees) across the roof to keep from having any issues with the insulation falling, I removed the headliner to change the seat belts 6 months before selling and not one piece of it had sagged at all.
On the doors I would recommend making sure you have plenty of access to roll it on tight, the Camaro had limited access and I tore-up my forearms putting it in!

 

you say exhaust you hate it got a pic of it? end of hi-jack