Mazda 3 Sound Deadening?

[blu22]

I have reduced all the rattles in the mazda three however there are a few external rattles which I am just lost on, the first is The rear lip/ spoiler thing on the hatch back, It has a little plastic piece on the underside which will vibrate against the metal fin/lip, I used silicone sealant and filled the crack however there is an internal rattle on the lip now, I was wondering if there is a way to remove the plastic piece under this so that I can deaden this from the inside out any tips would be great. There is also a sound coming from underneath the bumper, by the wheel base???? I dont know exactly how to cure this?? (also any better looking clips than the one I currently have for my rear wiper would be of great help) I have two W7s and If I could deaden my entire car this would be an amazing feat. much props to anyone who can help me or tries to help me

 

[mobomelter]

have you tried dynomat? that might cure some problems.

 

[Mz3_4u2nv]

geez!

2 w7? damn you are crazy lol. i have one and thats more than enough for me. is yours a 12? well with my 12 i have a great deal of rattling, so i can not believe the rattles with yours. just my thoughts, sorry i am of no help. how many watts are you pushing? by the way, if i can put out a question out there, if the extream dynamat good enough to cover the entire trunk of the hatch? thanks!

 

[blu22]

My amp is A5000SPL on 12' W7s I need to know how to stop the fin or take the under plastic side off, I used a Generic Dynomat called deadening mat non of the doors have any rattle and neither does the rear hatch. HELP WITH THE LIP/FIN???

 

[tsunami]

underneath the bumper? i would say put it up on jack stands and put your music on then go under the car and check it out... (block your wheels!!) it may be some wire harness for the lights or something you are bangin around that you can just tape down. as far as the spoiler goes....???....