[mistermojorizin]

the bottom line is the v81/29.2 is treated as a single entity by the current tuners. Jim C started to explain the differences (v81 prevents increase in torque, 29.2 merely detects it) but it was never confirmed/investigated. So, for all intents and purposes its the same thing, it detects engine tuning. The following tunes are invisible:

sstt
jb1
jb2 (with special install)
jb3 (modifies fuel pressure)
V3 (modifies fuel pressure)
dinan (bmw knows you have it anyway)
Helix says its invisible, but Art's car threw the detection code, helix said that it was because his fuel pump failed
i saw a post recently that said AA now has new software for 29.2, but haven't heard anything about it