Did you ever complete the 9 or 10 inch sub swap you were contemplating? My good friend runs a high end car audio shop and I was thinking of swapping the 8 inch stock subs for some 10 inchers if
they both fit and are available in 6-8 ohms.
I am happy with the enhanced sound, but do agree it could use a tad more bottom. I am only considering this as I could get it done relatively inexpensively and it would add several db of low end extension which would fatten things tremendously.
My friend can fab any kind of custom enclosure for the under seat area.
Of course the other alternative is figuring out some way to run the SWS8 under there. Any definitive LOC that will work? I was not able to figure it out based on all the prior threads. Seemed nothing could handle the juice.
I want to add that none of this means that I think the EPS was not worth it! Still better than my Lexus and Infiniti systems.... I am just a tweaker and modder. Like a disease I guess!
2009 Space Gray Carbon Leather E90 with DCT, Tech package, and EPS. Mods: Fabspeed 200 cell cats, Xpipe w/resonators and no secondary cats, BPM tune, Euro DCT software, Eisenmann Sport Mufflers, Vorsteiner Rear Diffuser II, SWS8 subs, JL Audio XD400 bridged 2X200W, built in radar