Exhaust is too loud inside the car after H/C/383
 

My TD car was quiet at low rpm and idle and screamed under WOT, but now it's loud at any speed. It's a baby blower cam too.

It doesn't have any leaks now. The exhaust isn't even dumped - it exits out the back. But holy crap is it loud now inside. I have to blast the stereo just to drown it out. There is also a lot of suspension/road noise and a few squeaks and rattles (I did shocks and lowering springs all the way around and a brand new rear suspension and also poly motor/trans mounts).

What is some good sound deadening stuff to use? I'm going to do all new carpet while I'm at it I guess...

Poly Bushings are going to squeek a lot unless they're greased really good. I think that's also the source of your extra road noise, and maybe even some engine noise.

eBay Fatmat, it's a Dynamat knock off, but it works well.

I think you will need to quiet the exhaust down some; I have the same problem, my car sounded nice before all of my engine mods. I am looking for some type of resinator that could be put in the exhaust pipe and will not take too much effort to do.

That's why I got rid of my true duals.

Nevar! I'll put high flow cats in if I have to. :chug:

Tried that and they didn't do anything at all.

just keep stacking mufflers in there lol........i got 3 mufflers and a y pipe merge trying to keep mine quiet and its still loud........guess thats 14.2:1 CR for ya :devil:

Yeah I don't get why mine is that loud. hehe.

383, 218/230 cam, unported trickflow heads 9.3:1 or so CR only.

Dynamat? Its a sound deadning (sp?) material. I think Best Buy sells it for car stereo systems. (help keep the music in the car)

Ear Plugs....

Put louder speakers, it will sound better with Hair of the Dog blaring out the speakers..

A Honda or some type of Hybrid might help this problem


But my true duals are great nice and quiet.......Well on the stock motor it was.....

:jest:

Alternative solution would be hearing loss, then you won't notice it so much but everyone else will. WIN WIN

Borla XR-1

Spray it

Why 9.3:1 are you going to run a turbo or supercharger?

Put on a "tubo muffler". See what that does

If its too loud, you're too old. On a serious note...some cats and/or muffler change would help. Personally,I would not add any of the dynamat.

they have spray on sound deadener now.. cant remember the name tho

WHAT?

Yes supercharger