Just do the Cobb S1 now and enjoy the car as it is. After you get more modded-up, it becomes more worth it to pay money for a more optimized tune.
Things you'll probably want as you go from stock to a Strat or Dizzy tune:
- Symposer delete (because it can leak at high boost levels)
- Intercooler.
- Intake, or a better flowing air filter.
- Different DV, either something like a DV+, or a Turbosmart EM VR2 stock-fitment DV. The DV+ requires modifying your stock DV so there's no going back, the Turbosmart is a direct swap for the stock DV. Both options help the car hold boost better between shifts, and rolling on the throttle you notice immediately that boost ramps on quicker. Also, with an intake, both make neat sounds
Things you'll probably want as you go from stock to a Strat or Dizzy tune:
- Symposer delete (because it can leak at high boost levels)
- Intercooler.
- Intake, or a better flowing air filter.
- Different DV, either something like a DV+, or a Turbosmart EM VR2 stock-fitment DV. The DV+ requires modifying your stock DV so there's no going back, the Turbosmart is a direct swap for the stock DV. Both options help the car hold boost better between shifts, and rolling on the throttle you notice immediately that boost ramps on quicker. Also, with an intake, both make neat sounds