We had the chance to dyno a stock M140i AT here today so thought it would be interesting to compare the results against a stock M2 DCT.
Both cars were using 99 RON Fuel (93 Oct) and have around 2500 miles on the clock.
The M140i is rated by BMW at 340 BHP and 369 lb.ft torque whereas the M2 is rated at 370 BHP 343 lb.ft torque.
Most of the modern BMW turbo cars make a little bit more than BMW quote on our Dyno Dynamics dyno. The M140i surprised us!
Red Line is M2 and Green Line is M140i.
Flywheel
Wheel Power
As you can see the M140i had a higher peak torque figure just like BMW figures suggest. Midrange of the M140i is also stronger but the top end of the M2 is slightly better.
Looks like the B58 should be a great platform for tuning.