Reviewed By Nicolas C (CHATTANOOGA, TN) Reviewed for a 2013 Toyota Tundra —4/30/2016 12:20 PM
Increase power and speed as well. Mpg not sure always stepping on the gas haven't noticed that yet
Reviewed By John T (Fairfax, VA) Reviewed for a 2014 Dodge Ram —2/18/2016 5:19 AM
This works as advertised. I noticed an immediate difference in throttle response without the whistle. (my wife has not complained so it must not be making any objectionable noise) I have tracked a 1.2 mpg increase on two long trips now.