Yeah, ported in 1.55 cubes tuned at 34 hz. Not really pleased with how the box turned out that I made for the Mazda 3. I built the box with the port opening up and there is no way to get air into the cabin without having the backseat down. Right now the port is firing air right into the rear deck. Poor planning on my part. results in some odd frequency response and a great deal of rattling (I believe I can fix that) Well, my musical preferences are pretty much anything and everything. Listen to hip hop, alternative, classic rock, house/techno, even some country. My next box I want to make with the sub firing towards the front of the car with the port facing the same way. I would like to try and seal it off from the trunk as best possible. I am trying to save as much trunk space as possible, get as much sound as possible into the car, and either use the sub I have to get my desired sound or get some sub(s) to fill the job. I wouldn't mind keeping my sub, since it has been great for me, but am keeping my options open. Any feedback is welcomed. I highly recommend the ideas in bold to lots of people. If I were you I would keep the current setup, especially since it's still working well, and build a really nice spec'd box in the fashion mentioned above. Then, if it's STILL not giving the output you're looking for and you've done all you can with it, look into changing equipment. Then you'll know the measurements and techniques it will take to get the box just right in your car for whatever you upgrade to in the future. Just my .02 I'm a big fan of doing all I can to get everything out of what I already have before spending money on new stuff..... I'm a cheapskate in that regard....