GReddy Turbo Kit for Acura Integra will be the best mod to get. Turn your NA to a Boost car and you can feel the power difference from a Greddy Turbo.

All GReddy turbo and turbo upgrade kits use exclusively GReddy spec. Mitsubishi turbochargers. Our kits are designed and tested to match the best size turbo per application. This means you get good response, smooth drivability, performance that can still be upgraded, and lasting reliability. It takes a tremendous amount of time and money to successfully increase the power of a naturally aspirated engine. With GReddy bolt-on turbocharger kits, you can obtain instant horsepower gains with less time and money, while still having room for upgrading. Vehicles already equipped with turbochargers have engines with a large potential for power, which cannot be fully obtained by using the factory turbochargers. By replacing the stock turbocharger with a GReddy turbo upgrade kit; you can experience a powerful performance difference.
 
Product fits: 1999 Acura Integra, 1996 Acura Integra, 1997 Acura Integra, 1998 Acura Integra