| EZ, Time Consuming but EZ
If you take the time to make an adapter out of OEM parts for the o2 you have the ability to reuse the wiring if you replace the sensor. Find a junked bimmer and cut the o2 sensor connectors of the line to the ecu and the one to the sensor. Solder the wires together along with the wiring for the sensor and you had made small extension/adapter. This is how I did my SAAB turbo. Here's a qwik drawling I put together w/ Photshop and the ETK 
You can pick up a line for the vac/boost guage practically anwhere that manifold pressure flows.
~Phil
__________________  3.5" ECIS/ITG intake -> Samco ASC Delete Boot -> M50 Manifold -> S52 Cams. AA software, Dynomax Cats & Stromung exhaust
UUC Pulleys & Clutch stop, FDM=Zionsville radiator w/ SAMCO hoses, Fidanza LTW f/w & M3 clutch, UUC Evo3 SSK, 3.23 LSD
H&R Springs w/ Billstein sport shocks/struts, PUR RSM's & RTAB's, CF Strut brace, UUC Swaybarbarians, Motorsport X-Brace
18x8.5 M-Classics, Power Slots w/ Pagid Pads, Hella CELIS projectors + 5k Prolumen HID's, Hella Yellowstar fogs and LTW wing. CCA Member #382557 FS: E36 Sport Springs & Sport Pkg Sway Bars |