Reviewed By Warren C (LAS VEGAS, NV) Reviewed for a 2006 Ford Crown Victoria —10/17/2017 8:24 PM
It is very noticeable apon take off and at highway speed.
Reviewed By Matthew C (WALTERBORO, SC) Reviewed for a 2011 Ford Crown Victoria —7/1/2013 3:36 PM
Easy to install especially with a digital type throttle body. Deffinantly makes noise and did notice some throttle response improvement with these item. Helped gas mileage increase also. Hope this helps