I searched but could not find a simple list of what works with the Z140bh.
Wireless remotes - NO. still waiting on confirmation if the Pac-Audio WRI-P works with this specific unit.
XM-
P10XMT - personally confirmed WILL work. All XM channels come in, with station logos on screen. MEMORY of fav songs ALSO WORKS 100%. Sooooo.. even though the pioneer manual says you need a GEX-P920 for xm, and specifically states that the P10XMT doesnt work. IT DOES. traffic information DOES work, just not through the XM, the Z140bh has a built in traffic receiver.
Ipod interfaces:
CD-IB100II- Kinda works. I currently have it chained AFTER my P10xmt and I can get audio with an OLLDDD school classic. and by olllld school I mean 1st version with color screen. It DOES NOT give song info, just says "ipod003" for song 3. "ipod056" for song 56. Comes up on the source list as EXT, not Ipod.
(ill post results for a 3gs, (samed hdd/interface as a ipod touch) once it gets enough power in it, and also with an iphone 4, once my wife gets home.
Flash drives: YES. load music onto flash drive, plug into USB cable. Put songs in "Folders" and use the "folders" as playlists.
GPS
antenna is different from Older Z1-z2-z3 units (has a different connector)
Mic is the same plug as all the BT mic for head units.