Reviewed By Rodrigo R (Montgomery, IL) Reviewed for a 2004 Chevy Impala —10/4/2013 9:47 PM
sure do save more gas and more torque power as well. freaking awsome definitely would buy again and recommend to others.
Reviewed By David B (ENGLEWOOD, FL) Reviewed for a 2014 Chevy Impala —5/17/2016 4:17 AM
Install was easy. It definitely makes a whistling sound which varies with throttle position. I don't notice a power change. As of right now (about 2 weeks) my truck is recording about a .5 MPG increase. Not sure this will remain.