Reviewed By Jeffrey V (ROBERTSVILLE, MO) Reviewed for a 2013 Ford Flex —3/1/2018 11:08 AM
The growl under the hood is reserved for accelerating. As for hp, not noticed from start, but once you are up to around 40mph it comes alive. This is my fourth CAI from K&N and I always enjoy them. There are many naysayers, but they are just jealous.