Ok, so today I unpacked the 2 boxes from BSW and started the install. I had to remove my old sub box that was taking space in the trunk of my X first and clean all the wires. I left the positive connected and removed the fuse for the time being. Grounded the new wire close the new amp they sent me. By the way they use their own BSW amp, which is much smaller and more powerful than the original they had. I will post pictures later on. So the new sub fitted quite nicely in the opening. After I bolted the sub I realized that I knocked of the light bulb housing from the rear light. As you can imagine there is no space and no way you can put it back in the housing until you remove the fuse box again and unbolt the sub and remove and then fix the light bulb. Did it and put back all together.
Just to mention that I made sure all was connected and working before I started to put things to their places. So, sub is mounted and done, routed all wires nice and mounted the amp to the back of the left cargo panel. Now I have to cut a round whole on the right cargo panel to reveal the speaker behind. I already bought from eBay 10" speaker grille for $5 and all will look nice at the end.
I have to tell you that I'm absolutely happy with my purchase and the help that I got from Halston from BSW.
The sub has awesome sound and bass, the amp is great as well. I was pleasantly surprised how easy and fast the whole installation was and now I have an excellent sound in my X.

Here are pictures as promised...
 

I was able to snap some pictures today of the finished work. I'm really happy with the whole setup and the excellent sound/bass that comes from this 8" woofer.:thumbup:

Rado - Thank you for the review and pictures! Like how we can see the little bsw logo sneaking through the grill! Glad you are happy as that is the number 1 goal here at BSW! If you need anything else please just let me know!

Thank you, Halston. It is a pleasure doing business with you.

Nice! Thanks for posting the pics.

I'm looking to do a similar audio upgrade to my X5 4.4 sports. How much did all this cost?

You can get the current price for the system at bavsound.com

The speaker grille cost me $5 from ebay.

here's mine...
 

Rado and Halston; Since I couldn't find any comparisons or reviews, I went with what my installer and I were familiar with. I am glad to know that you are pleased with your setup. :thumbup:

My sub response is incredible, now I need to upgrade my other speakers (Halston, I promise to call you this time).

I chose not to cut my sub cover, but I may consider doing that down the road.

Here is a peek at mine;

Gixxerboy63, Cut the sub cover! i have the same JL sub box as you and did not cut mine until a month ago, i wished i did when i first installed it, nice clean rattle free sound! :thumbup:

i finally upgraded my audio and it sounds amazing - i went with elemental designs 10" sub and i haven't cut my cover yet - where did you get that grill? would like to do the same.. nice setup.