Originally Posted by e36jakeo
The DCT m3 could be 0.3 seconds faster than the 6-speed in the 1/4 mile with a 2-3 MPH higher trap speed, depending on just how fast it shifts and what gearing they choose.
The 0.3 on trap time might be optimistic but you may me conservative on the trap speed increase. IIRC the manual car finishes in 4th so you need to shift 3 times. 3 * 0.25s = 0.75s of coasting while on the run. I would expect the car to pick up more than 2-3mph in that amount of time not counting any gear spacing improvements.
Off the line the DCT may suffer depending on what form of LC we get. Good drivers can easily beat the SMGII off the line (us version).