Went to the dyno today. My E92 M6 ran 100 octane gas with 92 octane gas in a 1:1 mix on a JB3 1.3 8D3 map 7. This netted 382 std rwhp and 386 fl/lbs torque.
mods on car:
JB3 1.3 8D3 map 7
BT Dual cone filters
Forge comp. bypass valves
Car is stock otherwise.
Here is the graph:
I guess next is downpipes and I'll finally mount this Spearco IC I've had sitting on the shelf for over a year.