Here are some dragy runs from BMS' 2020 G20 M340i. Pretty solid gains JB4 only with more on the table I'm sure.
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Couple runs on our development 2020 M340. The car is RWD so traction limited, we drop boost 5psi in 1st gear to help get it off the line. Fuel is 91 craptane + 3-4 gallons of E85 (~E20). Roughly equivalent to 93 octane. Car is factory other than a JB4 and BMS intake.
Our best run on map0 (JB4 disabled) is 12.38@113mph, best run on map3 so far 11.96@120mph, both traction limited. 7mph trap speed gain JB4 only is solid though. There is probably more in it with map6 and a little more E85 mixed in so we'll keep at it!
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