Improves mileage and performance
Reviewed By John B (HUMBLE, TX) Reviewed for a 2011 Toyota Tundra —10/15/2014 9:34 AM
It improved my mileage right away by .5mpg and gave it that throaty sound with better performance. A week later I added a cat-back exhaust and added another .5mpg. Sounds great. Wished I did it 4 yrs ago.