2000SantorinS4

I have been having alot of problems recently with rattling in the trunk. Is Dynamat the best solution? What do you audio experts recommend for me to do to get some nice clean, hard hitting bass?

HDClown

Is it your license plate? If so, make sure you have 4 bolts holding it down. Apply some dynamat to the back to prevent a plastic on plastic rattle. perhaps wedge some foam in there.

Is your rear deck rattling? Find out what is and try to secure it.

Is the trunk lid actually ratting? Dynamat will be a good solution.

Dyanamat adds weight primarily, which is how it works, and that's not always the answer.

QuattroRocket

My 2000 and 2002 A4 rattled in the lock mechanism or that area, nothing to be done there.