Looking for opinions from *thoughtful* NA owners who have applied mods to the car. My warranty is up in the near future and I am getting the itch. However; I have been down this road in the past (with other cars) and ended up thinking 'why did I do that?' after 6 months to a year. I.E. looking back and wondering what the mod delivered other than noise?
I know there are choices for ECU tuning, CAI, various TVT kit levels, etc. If you have done some of these mods, gotten used to them (time has passed, the short term euphoria or disappointment period is over), and have an objective opinion you would like to share, please do so!

And thanks.