I already searched and didnt find these answers so here goes:

1. I am dynamatting the trunk and doors already. I am enclosing 2 10" in the spare tire well. Should I mat the inside of the well? Should I stuff it with fiberfil? I am going for a sealed enclosure.

2. I saw posts about moving the battery to the trunk but never saw a definitive answer. i am using mine as a daily driver although it has some mods done. (turbo, fuel rails, ecu, lowered with coilovers, etc) I weigh about 220 and was thinking that moving to the rear passenger side would offset the weight and I could get a yellowtop as well. I really dont like that little *** battery. Would it hurt anything or cause any major handling changes?

3. I cant stand the loud exhaust on it. Car came this way and the seller said I could put a 3" exhaust and different muffler and not lose performance. What kind of muffler should I use on a turbo'd car?

I posted in a couple areas because the questions were varied.

Car is a 1999 civix dx 4dr.

 

Ok First the dynamat ? Yes line your spare tire well. I did the same thing in my 2002 Galant and It did help.

As for the battrey relocation personally I like the battery in the back. And deffinatly go with an optima. I like my batery in the back because if you have an alarm it is much harder to disable it if the battery is in the trunk.

As for the rest I'll leave that for someone else to coment on.

Hope this helped.

 

it does, thanks. Somone answered the last question in exhaust forum.