Reviewed By john m (GLASSBORO, NJ) Reviewed for a 2002 BMW 5-Series —8/20/2014 5:35 AM
Install was very easy took about 20 min.. Gas mileage has improved between 2-2.5 mph..
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.