GReddy Bolt-On Turbocharger Kits are designed specifically for driveability and reliability, as well as performance. With a GReddy bolt-on turbocharger kit, you can obtain instant horsepower gain with less time and money and still have the potential for upgrading. Since they are based completely on stock engines, these kits come with all the necessary basics, including fuel enrichment. If competition use is your goal, there are many GReddy upgrades to boost the power output even further, such as: intercoolers, blow-off valves, fuel management and boost controllers.