I would run against one in the Street car sport tuner class that had, raised boost,intake,tune,upgraded FMIC and he ran12.2-12.1 at about 117. To my 12.0 @115 runs. I think on a longer run the 135i might pull on the crossifre but in the 1/4 i had him every time.

*edit* he also ran on drag radials vs my Nitto NT555 streets. But I became a master at good launches on hard street tires with the 6 at the track after many many launches.