18.5WHP / 13.12WTQ Gain (Infiniti G37 coupe) Built To Last - Designed & Built in U.S.A. More Efficient Air Filter Media Enhances Airflow Improves mileage per gallon (MPG) Larger Surface Area Air Filters for Greater Intake Airflow Capacity Enhanced Throttle Response Across the Rev Range Simple Installation - Easy Enough to ...