Reviewed By Nicholas J (Pasco, WA) Reviewed for a 2005 Infiniti QX56 —7/3/2013 7:21 AM
I installed the spacer in about 30 minutes. Fit will with factory air intake. Noticed better bottom end response and improved gas mileage. Went from 15.5 average to about 17.2. There is no "whistling" sound. Good addition.