Newbie - E70 X5d

[thekriebs]

Hi all - just wanted to say thank you for the forum, and apologize if I am to do my introduction elsewhere (I looked, but didn't find an introduction section).

It has been years since I have been on a forum, but I just purchased a 2012 X5d to replace my wife's Hyundai (big upgrade), and the X5d will eventually become mine when my DD craps out (hopefully later, or never lol).

My background is mostly hobby automotive, fabrication, engine calibration, you name it, I have done it. I look forward to designing and fabricating some of my own parts for my X5, but mainly I wanted the X5 to haul my son and wife safely, and to tow my LS2 swapped Pontiac Solstice to autocross when it is finished.

Anyway, I found this forum because the X5 I purchased was an auction car, with a few engine fault codes. I believe I figured out they are related to the DEF tank/warmer/sensor, which appears to be a costly repair. No biggie as I intend to tune and delete the SCR/DEF/EGR with a Malone Stage 2 tune, down the road.

Plans for the X5:
1) Wash/Wax/Detail: you can see from the pictures it is rather dirty, no way to treat a BMW!
2) Assess the DTCs, hoping it is the DEF tank/warmer/sensor, and I can simply ignore the code until I am ready for the tune. If not, well, guess we cross that bridge (any good threads on DIY restoration of the SCR components?).
3) Install a hitch.
4) Fabricate (or buy) a DPF delete downpipe, install intake swirl flap deletes, EGR delete.
5) Assess efficiency of the intake - possibly make a cold air intake box with panel filter. I have learned not to mess with most intake tubes, as this will cause issues with airflow metering, is it the same way on the X5d?
6) Malone stage 2 Tune.
7) Android Auto Retrofit - probably after the wife is done with the vehicle, since she is a dreaded Apple person lol.
8) Do some coding - I am a nerd, coding seems fun and right up my alley, so naturally I will have to mess with it.
9) Enjoy the heck out of it. I am very excited to own my first BMW, and the fact I got such a deal on it, with a diesel, excites me even more!

Is there anything I need to look for with the X5d?
Anything that I need to do to maintain reliability? Special oils, filters, cleaning, etc?