Today I was at the E-town in jersey with my 05 A4 GTO. My first run I got a 13.9 but half way down the track my back started to whip so I had to let off the gas. My best run was a 13.8 I have intake and tune. Each run it felt like I couldnt get good grip and I would spin a little bit in the beginning. My 60' time was 2.2. Any tips on how to get good launch?