Reviewed By mathew h (WAKONDA, SD) Reviewed for a 2007 Ford F-150 —1/30/2014 8:30 PM
I have noticed a little bit of mpg improvement and definite power boost
Reviewed By Alejandro I (yuma, AZ) Reviewed for a 2009 Ford F-150 —3/15/2017 8:46 PM
I bought this spacer to improve hp and throttle response, i did notice a whistle sound from 2500 to 3000 rpm and also more hp when accelarating. It is not a huge improvement but i did notice a little more than stock.