My 94 had the stock system when I bought it..sounded good but like you not alot of Bass. Ripped out the old deck(tape) and put in a CD player with an amp and 2 10" subs. I left the tweeters cause they actually sound not too bad. So I guess what he is saying is if you install a deck throw in a whole new system.....Cause if you want more bass you'll some subs...
1994 318is-Sold July 13th 2010.. Sad Sad Day