I Just bought a 2006 S60 and I want to do a few inexpensive mods to sharpen it's look and give it a little more spunk. It's an Ice White 2.5T with very few factory options. One thing it immediately needs is some bass added to the factory sound system.

Any suggestions would be welcomed . . .

 

Lowering Springs or better yet, Coilovers.
18" Pegs or 18" Team Dynamic 1.2 from ViVA (http://www.vivaperformance.com/catal...roducts_id=823).
OEM sport kit.

That will sharpen the look up quit a bit!

 

I bought a 2005 2.5T ice white like yours with pretty low mileage last July. So far I did 2 upgrades. 1) I installed the IPD ECU upgrade. This is not cheap ($800) but the 30+ hp gain that the ECU upgrade provides is very noticeable. This upgrade transformed the car. 2) I replaced the factory radio with a pioneer x710bt unit. Like you I initially found the stock radio not to have much bass but after installing the Pioneer the bass have improved significantly. If you touch the radio and/or the climate unit make sure you disconnect the battery first otherwise that will trigger an error message that only Volvo will be able to clear.