I have a 2010 Infiniti g37x with around 136k miles. Im a 16 year old trying to do some simple mods to my car. Im looking for the most safe but best tuning system for my G since I dont wanna end up hurting the car. I dont know which tuning system would be the best for safety and would give me great results.

 

What modifications have you made? A tune doesn't really add much on a stock naturally aspirated powertrain.