Don't know how accurate the cobb ap is compared to a v-box but heres my result.
car is a 2008 335xi 6at running stg1+fmic v402 agg. mods are in sig and temp outside was 22 degrees with traction control off on stock rft 225/45/17 and stock 159 wheel. Test was done bb @ about 2500 rpm in DS mode.
volk re30 18x8.5 / tc kline coilovers / cobb ap / afe stg 2 sealed cai / afe air scoops / 5" ets fmic (sold car)
2013 x3 35i fully loaded with M package