What modifications can I do to increase the performance of my Nissan GT-R?

I recently purchased a Nissan GT-R and I want to make it faster. I've heard about performance upgrades like ECU tuning, exhaust upgrades, and turbocharger upgrades. What modifications should I consider for my GT-R and how will they improve its performance?

ECU tuning can unlock more horsepower and torque from your GT-R's engine. It can also improve throttle response and fuel efficiency. I recommend researching reputable ECU tuning companies and getting a custom tune for your specific GT-R.