What is the best modification for a Nissan GT-R?

I'm looking for ways to improve the performance of my Nissan GT-R. What would be the most effective modification to make?

In my experience, upgrading the turbochargers has had the biggest impact on performance. Consider installing a larger, more efficient set for a significant increase in horsepower and torque.

Upgrading the exhaust system is a popular modification for the GT-R. It not only adds a deeper, more aggressive exhaust note, but it also improves exhaust flow for a slight bump in power.

Don't overlook the importance of a good tune. Investing in an aftermarket engine management system and getting a custom tune can improve power, fuel efficiency, and overall drivability.