Reviewed By Richard C (Yakima, WA) Reviewed for a 2008 Nissan Frontier —8/3/2015 10:47 PM
Works like an air filter.
Reviewed By Danny S (Fernley, NV) Reviewed for a 2015 Chevy Silverado —7/27/2015 8:20 PM
This is my 3rd truck and my 3rd throttle spacer. This item with a air intake kit or even a K&N air filter helps the bottom end and as long as you keep your foot out of it, The gas mileage will also improve a tad.