Looking to pump up the horsepower output of the Nissan Gt-R? Changing or improving the intake system on your Nissan GTR is one of the easiest ways to bolt on some additional horsepower. Something as simple as changing the OEM Filter Elements to High Flow K&N Filters can make a substantial difference in horsepower. You can also use an Access Port from Cobb Tuning to increase horsepower. This section is all about improving the performance of the Nissan GT-R