On this episode of The Downshift, Alex Bernstein, from European Car magazine, walks us through their annual Tuner GP with Greg Emmerson, as he competes with his own BMW M3. Watch and listen to what it takes to be a part of this diverse competition from the dyno, the drag strip and to the track.

For full Tuner GP results stay tuned for the Feb. 2014 issue of european car magazine, on sale 12/10/13

The Downshift appears every other Tuesday on the Motor Trend channel. http://www.youtube.com/motortrend

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