What makes it impressive is that this is not some single turbo car with 800+ horsepower to the wheels. The automatic E82 135i belongs to BimmerBoost member @turbocripple and this mod list can easily be replicated by any N54:
VTT Normal Stage 2 Billet - Cost $2799
Matt Schnell DP's
CP-e Charge pipe with Tial Q
JB4 ISO 5
JB4 MHD hybrid flash, and Firmware
BMS PI OTS map
Fuel-it Stage 3
M3/4 plugs at .022 gap
New Delphi coils
Kosei 17" R1 racing wheels in the rear
Hoosier 275/40/17 DOT Drag Radials
Carbon Fiber Hood
That is a recipe for power in the 550-600 whp range. VTT of course has higher power stock frame options as well. The stock N54 turbo frames being used to set the ET record is awesome to see. As stated, it was not a lack of power but efficient use of said power that was the problem. This car being a 135i with some weight removed helps as with the driver it is in the 34XX pounds range undercutting E9X 335i's significantly.
The 1.8X 60 foot is good but there is even room for improvement there meaning the time can and should fall further.
It is also interesting to note the latest two 10 second passes on the platform both come from automatic 135i's.
With winter approaching the number of 10 second N54's should only grow as more get out to the strip. Right now though the recipe for 10 second success is a 135i, automatic, and upgraded stock frames.
Congratulations to @turbocripple and Vargas Turbo Technologies.