I've had the BSW speaker upgrade for about 5 years. while the kit definitely seems to be a quality product, the difference is marginal. Every time I get into the ZHP from our '08 MDX and turn on the radio, I'm disappointed. The MDX system is so much better. I think if the kit included subwoofers, it might be a little better but definitely not worth the premium price IMO.
I'd like to find a set of those subwoofer adapters.... I'm pretty sure the stock subwoofers are some weird size and not 6X9
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
H&R sport springs, UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers