I did this mod about two weeks ago with 220 mf polarized caps and it sounded better. I am normally in the car solo, so the music is up almost all of the time. Lately I have been getting some "blap" from the door speakers on heavy bass songs, so I figured the caps were failing due to being polarized. Switched the caps out today for non-polarized, 220 mf and crisp clean sound is back! For those that are interested, I do not have the stock head unit. I bought a low end Sony from Crutchfield that had blue-tooth capabilities and installed it with the supplied harness from Crutchfield. Additionally, I am not using the pre-amp outputs on the Sony, I am using the standard speaker outputs from the Sony harness. The pre-amp outputs limited the sound so much that with the windows down, I had to have the stereo set at max volume (50) just to hear it. By going with the speaker wires in the Sony harness, now there is no need to go much past 25. I also have the "loudness" active and I am using a preset EQ setting in the Sony called "Edge". Sounds AWESOME!! Those subs behind the seat hit HARD!

RL