Regulated Fuel Pressure
 

From what I have learned the only tuning available on these cars (2010) is the air/fuel ratio (no timing control). Has anyone ever considered just getting a fuel pressure regulator and monitoring the air/fuel and power gains on a dyno? I have been working on cars for the past 15 years but mostly with older and newer american muscle cars. This is my first Japanese sports car but figured fuel injection is fuel injection. Obviously this goes for cars with just simple bolt-ons, not blower cars.